Explain. What should the format of a problem be if using the Factoring Method? Can this method be applied for any quadratic problems? What are the limitations? Why do we make each factor equal to zero?

Answers

Answer 1

The factoring method is a technique used to solve quadratic equations of the form ax^2 + bx + c = 0, where a, b, and c are constants and x is the variable. To use the factoring method, we need to find two numbers that multiply to give c and add to give b. We then use these two numbers to factor the quadratic expression into two binomials, set each binomial equal to zero, and solve for x.

The format of a problem that can be solved using the factoring method should be in the form of ax^2 + bx + c = 0, where a, b, and c are constants and x is the variable. The quadratic expression should be factorable into two binomials.

The factoring method can be applied to any quadratic problem that is in the correct format and is factorable. However, not all quadratic equations can be factored. In cases where the quadratic expression cannot be factored, we need to use other methods such as the quadratic formula or completing the square.

The main limitation of the factoring method is that it only works for quadratic equations that can be factored into two binomials. If the quadratic equation cannot be factored or if it has complex roots, then the factoring method cannot be used to solve the problem.

We make each factor equal to zero because if the product of two factors is zero, then at least one of the factors must be zero. Therefore, we set each factor equal to zero and solve for x to find the roots of the quadratic equation.


Related Questions

B) The formula of connecting mass and weight is
W=m x acceleration due to gravity. What is the value of acceleration due to gravtiy on Earth

Answers

The acceleration due to gravity on Earth is approximately 9.81 meters per second squared (m/s^2)

Acceleration due to gravity is the acceleration experienced by an object when it is dropped or falls freely in a gravitational field. On Earth, the value of acceleration due to gravity is approximately 9.81 meters per second squared. This means that if an object is dropped from a certain height, its velocity will increase by 9.81 m/s^2 for every second it falls.

The formula connecting mass and weight, W = m x g, shows that weight is directly proportional to the acceleration due to gravity. This means that as the value of acceleration due to gravity changes, the weight of an object will also change accordingly. The value of acceleration due to gravity is an important factor in various fields, including physics, engineering, and astronomy.

Learn more about acceleration due to gravity here

brainly.com/question/12792214

#SPJ4

SHOW STEPS! PLS HELP

Answers

Answer:

chocolate = $1.25

soft drink = $1.85

Step-by-step explanation:

Given price of chocolate is c and price of soft drink is s

Olivia: 5c + 2s = 9.95

Taylor: 6c + 6s = 18.60

6c + 6s = 18.60

divided by 6, we have

c + s = 3.1

=> s = 3.1 - c

Substitute s = 3.1 - c into

5c + 2s = 9.95

5c + 2(3.1 - c) = 9.95

5c + 6.2 - 2c = 9.95

3c = 9.95 - 6.2

3c = 3.75

c = 3.75/3 = 1.25

s = 3.1 - c = 3.1 - 1.25 = 1.85

25 cm 7 cm 15 cm what is the area of triangle

Answers

The area of the triangle with side lengths of 25 cm, 7 cm, and 15 cm is approximately 209.27 cm².

To calculate the area of a triangle with side lengths of 25 cm, 7 cm, and 15 cm, we can use Heron's formula, which is a formula for finding the area of a triangle when only the side lengths are known:

Area = √(s(s-a)(s-b)(s-c))

where s is the semi-perimeter of the triangle, and a, b, and c are the lengths of its sides. The semi-perimeter is half the sum of the three sides:

s = (a + b + c) / 2

Substituting the given values, we get:

s = (25 + 7 + 15) / 2 = 23.5

Now we can use Heron's formula to calculate the area:

Area = √(23.5(23.5-25)(23.5-7)(23.5-15))

= √(23.5 * (-1.5) * 16.5 * 8.5)

= √(43,822.5)

≈ 209.27 cm²

To learn more about triangles

https://brainly.com/question/2773823

#SPJ4

Is 4.284 an irrational number?

Answers

Answer: "An irrational number is a number that cannot be expressed as a ratio between two integers and is not an imaginary number.

Since 4.284 is not the square root of a negative number, it is not imaginary

Since 4.284 is a rational number from above, 4.284 is not an irrational number"

Step-by-step explanation: /\ I looked at a calculator for irrational numbers. Should be right, considering how it's well explained. Just search for "irrational number calculator". Dont rely on that. But it's there if

you need it! :)

No

It is a rational number since it is a fraction/decimal that isn't non-terminating, not is it pi or

Find [fog](x) and [gof](x), if they exist. State the domain and range for each.
5.f(x) = -3x
g(x) = x +8

6. f(x) = 2x²-x + 1
g(x) = 4x + 3

Answers

Given functions:
f(x) = -3x
g(x) = x + 8
To find fog, we need to substitute g(x) into f(x):

f(g(x)) = f(x + 8) = -3(x + 8) = -3x - 24

The domain of fog(x) is the set of all real numbers since g(x) is defined for all real numbers.

The range of fog(x) is also the set of all real numbers since for any value of x, we can find a corresponding value of f(g(x)).

To find gof, we need to substitute f(x) into g(x):

g(f(x)) = g(-3x) = -3x + 8

The domain of gof(x) is the set of all real numbers since f(x) is defined for all real numbers.

The range of gof(x) is the set of all real numbers since for any value of x, we can find a corresponding value of g(f(x)).

Given functions:
f(x) = 2x²-x + 1
g(x) = 4x + 3
To find fog, we need to substitute g(x) into f(x):

f(g(x)) = f(4x + 3) = 2(4x + 3)² - (4x + 3) + 1 = 32x² + 47x + 20

The domain of fog(x) is the set of all real numbers since g(x) is defined for all real numbers.

The range of fog(x) is the set of all real numbers since for any value of x, we can find a corresponding value of f(g(x)).

To find gof, we need to substitute f(x) into g(x):

g(f(x)) = g(2x² - x + 1) = 4(2x² - x + 1) + 3 = 8x² - x + 7

The domain of gof(x) is the set of all real numbers since f(x) is defined for all real numbers.

The range of gof(x) is the set of all real numbers since for any value of x, we can find a corresponding value of g(f(x)).

solve this problem for me

Answers

The discounted price of the camera is $270 and the price of the camera after the 40% increase is $378.

When the store offered a 40% discount on the original price of $450, the discounted price of the camera can be calculated as follows:

Discounted price = Original price - Discount

Discounted price = $450 - 40% x $450

Discounted price = $450 - $180

Discounted price = $270

Therefore, the discounted price of the camera is $270.

After the sale, the discounted price of the camera was increased by 40%. We can calculate the new price of the camera as follows:

New price = Discounted price + 40% x Discounted price

New price = $270 + 40% x $270

New price = $270 + $108

New price = $378

Therefore, the price of the camera after the 40% increase is $378.

To learn more about price please click on below link.

https://brainly.com/question/18117910

#SPJ1

What is the greatest number of tens that can live in the tens house?

Answers

The greatest number of tens that can live in the tens house is 9.

The greatest number of tens that can live in the tens house depends on how many digits there are in the number.

Let's start with a two-digit number, like 99. In this number, the leftmost digit represents the number of tens, so we want to find the largest digit that can be in that place.

Since we are limited to using only the digits 0-9, the largest digit that can be in the tens place is 9.

Now, let's consider a three-digit number, like 456. Again, we want to find the largest digit that can be in the hundreds place.

Since we are limited to using only the digits 0-9, the largest digit that can be in the hundreds place is also 9. So, we can have up to 9 groups of ten (or 90) in the hundreds place.

In the tens place, we can again have up to 9 groups of ten, and in the units place, we can have any digit from 0-9.

Therefore, the greatest number of tens that can live in the tens house in a three-digit number is 9.

To know more about numbers here

https://brainly.com/question/17429689

#SPJ4

Graph the function. State the domain and range. f(x) =[x-2]

Answers

Answer: Domain: All x-values

Range: All y-values

Step-by-step explanation:

the density of apple juice is 1.04 grams per cm³
the density of fruit syrup is 1.6 grams per cm³
the density of sparkling water is 0.99 grams per cm³
35 cm³ of apple juice are mixed with 25 cm³ of fruit syrup and 270 cm³ of sparkling water to make a drink with a volume of 330 cm³
work out the density of the drink

Answers

Therefore, the density of the drink is approximately 1.04 grams per cm³.

What is volume?

Volume is a measure of the amount of space occupied by a three-dimensional object or substance. It is the amount of space inside an object or container and is usually measured in cubic units such as cubic meters (m³), cubic centimeters (cm³), or cubic feet (ft³).

Given by the question.

To calculate the density of the drink, we need to first calculate the total mass of the drink, which is the sum of the masses of apple juice, fruit syrup, and sparkling water.

Mass of apple juice = volume of apple juice x density of apple juice = 35 cm³ x 1.04 g/cm³ = 36.4 g

Mass of fruit syrup = volume of fruit syrup x density of fruit syrup = 25 cm³ x 1.6 g/cm³ = 40 g

Mass of sparkling water = volume of sparkling water x density of sparkling water = 270 cm³ x 0.99 g/cm³ = 267.3 g

Total mass of the drink = mass of apple juice + mass of fruit syrup + mass of sparkling water

= 36.4 g + 40 g + 267.3 g

= 343.7 g

Now we can calculate the density of the drink by dividing the total mass by the volume of the drink:

Density of the drink = total mass of the drink / volume of the drink = 343.7 g / 330 cm³ = 1.04 g/cm³ (approx.)

To learn more about mass:

https://brainly.com/question/19694949

#SPJ9

"A construction company has a number of trucks designed to haul different amounts. The line plot displays the weight each truck can haul. If all the trucks are working at the same time, how many tons can the trucks carry?" I would also like a explanation too please

Answers

The line plot shows that the construction company has a number of trucks, each of which is designed to haul different amounts of weight.

If all of these trucks are working at the same time, we can calculate how many tons the trucks can carry in total. In order to do this, we need to look at the range of weight each truck is capable of carrying, and then add all of these numbers together.
In order to determine how many tons the trucks can carry, we need to use the information provided by the line plot. The line plot displays the weight each truck can haul, which is given in pounds. We need to convert the weight in pounds to tons in order to find the total weight that the trucks can carry.

To do this, we can use the following conversion factor:1 ton = 2000 poundsWe can use this conversion factor to convert the weight of each truck from pounds to tons. Once we have done this, we can add up the weights of all the trucks to find the total weight that the trucks can carry. Here are the steps:

Step 1: Convert the weight of each truck from pounds to tons Truck 1: 6,000 pounds ÷ 2,000 pounds/ton = 3 tons Truck 2: 9,000 pounds ÷ 2,000 pounds/ton = 4.5 tons Truck 3: 8,000 pounds ÷ 2,000 pounds/ton = 4 tons Truck 4: 10,000 pounds ÷ 2,000 pounds/ton = 5 tons Truck 5: 11,000 pounds ÷ 2,000 pounds/ton = 5.5 tons Truck 6: 9,500 pounds ÷ 2,000 pounds/ton = 4.75 tons

Step 2: Add up the weights of all the trucks3 + 4.5 + 4 + 5 + 5.5 + 4.75 = 26.75 tons. The trucks can carry 26.75 tons in total.

For more such questions on Construction company

https://brainly.com/question/23740420

#SPJ11

(20P) Help please and thankyou it’s due soon

Answers

Simple. You just have to look at it to tell that it is bigger than the other then your done
Dndnskkskssjksskakkssnnsnzn

Complete the equation that has $(3,4)$ as a solution.

y= _x--2

Answers

Answer: Your welcome!

Step-by-step explanation:

y= 3x-2; This is a linear equation with a slope of 3 and a y-intercept of -2, which has the solution (3,4).

Thanks! #BO

Julie is backpacking to the Blue Ridge Mountains. She starts from M, travels a 3 3/8 mi to N, travels 2 1/4 mi to P, then walks 4 11/24 mi back towards M. If M, N, and P lie on a straight path, how far is Julie from the starting point M?

Answers

Julie is trekking to the Blue Ridge Mountains, therefore she is 10 1/12 miles from the beginning point M.

what is distance ?

Distance in mathematics is a numerical representation of the actual area between two points. The shortest distance between those two points is how long the path is. The Pythagorean theorem, which asserts that in a right triangle, the sum of the squares of the lengths of the two legs (the sides perpendicular to one another) is equal to the square of the length of the hypotenuse, is used to determine the distance between two locations in a two-dimensional plane (the longest side, opposite the right angle).

given

We must determine Julie's total distance traveled before we can determine how far she is from the beginning location M. By combining the distances between each location, we may determine this:

3 3/8 miles from M to N

2 1/4 miles from N to P

P returning to M: 4 11/24 miles

We must identify a common denominator in order to aggregate these distances. Because it can be divided by 8, 4, and 3, we may pick 24 as the common denominator.

From M to N, the distance is 3 3/8 miles (or 27/8 kilometers). From N to P, it is 2 1/4 kilometers (or 9 kilometers).

We may now multiply the distances:

27/8 + 9/4 + 107/24 = (81 + 54 + 107) / 24

= 242/24

= 10 1/12

Julie is trekking to the Blue Ridge Mountains, therefore she is 10 1/12 miles from the beginning point M.

To know more about distance visit :-

brainly.com/question/29130992

#SPJ1

solve for b??
5b-3 > 9b+4

Answers

Answer:  b<-7/4

Step-by-step explanation:

Let's collect numbers with same variables to the same side:

-3-4>9b-5b

-7>4b

b<-7/4

A line has a slope of 1/ 6 and passes through the point (–6,6). Write its equation in slope-intercept form.

Answers

Answer:

Step-by-step explanation:

The equation of the line with a slope of 1/6 passes through the point (-6, 5) is y=(1/6)x+6.

What is the equation of a line?

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of line is given by,

y =mx + c

where,

x is the coordinate of the x-axis,

y is the coordinate of the y-axis,

m is the slope of the line, and

c is y-intercept.

Given that a line with a slope of 1/6 passes through the point (-6, 5). Therefore, we can write,

y = mx + c

Substitute the values,

5 = (1/6)(-6) + C

5 = -1 + C

5 + 1 = C

C = 6

Hence, the equation of the line with a slope of 1/6 passes through the point (-6, 5) is y=(1/6)x+6.

Answer:

y = (1/6)x + 7

Step-by-step explanation:

The slope-intercept form of the equation of a line is y = mx + b, where m is the slope and b is the y-intercept.

We know that the line has a slope of 1/6 and passes through the point (-6, 6). To find the y-intercept, we can substitute the values of the point into the equation and solve for b:

y = mx + b

6 = (1/6)(-6) + b

6 = -1 + b

b = 7

Now that we know the slope and y-intercept, we can write the equation of the line in slope-intercept form:

y = (1/6)x + 7

Therefore, the equation of the line in slope-intercept form is y = (1/6)x + 7.

(Please could you kindly mark my answer as brainliest)

the number of netflix subscribers in latin america has increased a lot in recent years the number of paid subscribers from 2018-2020 was:

Answers

Answer: 37.5 million

Step-by-step explanation:

I looked it up

A number is chosen from 1 to 20. Find the probability that the number chosen is a odd prime number

Answers

The probability of choosing an odd prime number from 1 to 20 is 0.35

The probability is the ratio of the number of favorable outcomes to the total number of outcomes

The odd prime numbers between 1 and 20 are 3, 5, 7, 11, 13, 17, and 19. There are 7 odd prime numbers in this range.

The total number of possible choices is 20 (since there are 20 numbers in the range 1 to 20).

Therefore, the probability of choosing an odd prime number is:

number of odd prime numbers / total number of possible choices

= 7 / 20

= 0.35

Learn more about probability here

brainly.com/question/11234923

#SPJ4

FARMING A dairy farmer has 2650 dairy cows on his farm. If each dairy cow produces 2320 gallons of milk per year, how much milk does the dairy farm yield in one year?

Answers

The dairy farm yields 6,158,000 gallons of milk in one year, assuming that each cow produces 2320 gallons per year.

What is total amount?

The term "total amount" refers to the complete or full quantity or sum of something. It is the complete amount of something without any deductions or subtractions.

According to question:

To calculate the total amount of milk the dairy farm yields in one year mathematically, we need to multiply the number of dairy cows by the amount of milk each cow produces in a year.

Let's represent the number of dairy cows as "C" and the amount of milk produced per cow per year as "M". Using this notation, we can write:

Total amount of milk produced in one year = Number of cows x Amount of milk per cow

= C x M

Substituting the given values, we have:

C = 2650 (number of dairy cows)

M = 2320 gallons (amount of milk per cow per year)

Total amount of milk produced in one year = 2650 x 2320

= 6,158,000 gallons

Therefore, the dairy farm yields 6,158,000 gallons of milk in one year, assuming that each cow produces 2320 gallons per year.

To know more about total amount visit:

https://brainly.com/question/28529333

#SPJ1

Answer:

6.158 x 10^6

Step-by-step explanation:

Converted answer above to scientific notation.

Relative to the origin O, the position vectors of two points A and B are a and b respectively. b is a unit vector and the magnitude of a is twice that of b. The angle between a and b is 60°. Show that [a×[ob + (1-o)a] =√k, where k is a constant to be determined.​

Answers

Answer:

|a × [ob + (1 - o)a]| = √(7 - 8o(a · o) - 8(a · o)^2)

where k = 7 - 8o(a · o) - 8(a · o)^2.

Step-by-step explanation:

Given the position vectors of two points A and B as a and b respectively, where b is a unit vector, and the magnitude of a is twice that of b, we are asked to show that:

|a × [ob + (1-o)a]| = √k,

where k is a constant to be determined.

We can begin by expanding the vector inside the cross product:

ob + (1 - o)a = ob + a - oa

Since b is a unit vector, we can write:

ob = b - o

Substituting this into the previous equation, we get:

ob + (1 - o)a = b - o + a - oa = b + (1 - o)a - oa

Next, we can use the vector cross product formula:

|a × b| = |a||b|sinθ

where θ is the angle between a and b.

We are given that the angle between a and b is 60°, so we can substitute this value into the formula:

|a × b| = |a||b|sin60° = (2|b|)(1)(√3/2) = √3

Now we can calculate the cross product of a and the vector we just derived:

a × [ob + (1 - o)a] = a × (b + (1 - o)a - oa)

= a × (b + a - oa)

= a × b + a × a - a × oa

Since b is a unit vector, we know that a × b is a vector perpendicular to both a and b, and therefore perpendicular to the plane containing a and b. The vector a × a is 0 since the cross product of a vector with itself is 0. Finally, we can use the vector triple product to simplify a × oa:

a × oa = (a · a)o - (a · o)a = |a|^2 o - (a · o)a

Since |a| is twice |b|, we have:

|a|^2 = 4|b|^2 = 4

Substituting this back in, we get:

a × oa = 4o - (a · o)a

Putting it all together, we have:

a × [ob + (1 - o)a] = a × b + 4o - (a · o)a

Now we can take the magnitude squared of both sides:

|a × [ob + (1 - o)a]|^2 = (a × b + 4o - (a · o)a) · (a × b + 4o - (a · o)a)

Expanding the dot product, we get:

|a × [ob + (1 - o)a]|^2 = |a × b|^2 + 16o^2 + |a|^2(o · o) - 8o(a · o)b + 8(a · o)(a × b) - 2(a · o)^2|a|^2

Substituting the values we derived earlier, we get:

|a × [ob + (1 - o)a]|^2 = 3 + 16o^2 + 4(o · o) - 8o(a · o) + 0 - 2(a · o)^2(4)

= 7 - 8o(a · o) - 8(a · o)^2

Now we need to find the value of k such that the left-hand side equals k:

|a × [ob + (1 - o)a]|^2 = k

Using the vector triple product again, we can simplify the left-hand side as:

|a × [ob + (1 - o)a]|^2 = |a|^2|ob + (1 - o)a|^2 - ((a · [ob + (1 - o)a])^2)

Since we know that the magnitude of a is twice that of b, we have:

|a|^2 = 4|b|^2 = 4

Substituting this back in, we get:

|a × [ob + (1 - o)a]|^2 = 4|ob + (1 - o)a|^2 - ((a · [ob + (1 - o)a])^2)

Now we can substitute the expanded expression for ob + (1 - o)a:

|a × [ob + (1 - o)a]|^2 = 4|b + (1 - o)a|^2 - ((a · [b + (1 - o)a - oa])^2)

= 4|b|^2 + 8|b|(1 - o)(a · b) + 4(1 - o)^2|a|^2 - ((a · b + (1 - o)(a · b) - (a · o)(a · b))^2)

= 4 + 8(1 - o)(a · b) + 4(1 - o)^2(4) - ((a · b + (1 - o)(a · b) - (a · o)(a · b))^2)

= 28 - 8o(a · b) - 8(a · o)^2

Substituting this back into the previous equation, we get:

28 - 8o(a · b) - 8(a · o)^2 = k

Therefore, we have:

|a × [ob + (1 - o)a]| = √(28 - 8o(a · b) - 8(a · o)^2)  and

k = 28 - 8o(a · b) - 8(a · o)^2

Hope this helps! Sorry if it's wrong! If you need more help, ask me! :]

The following figure is made of 3 triangles and 1 rectangle.
H
248
B
2
Figure
Triangle A
Triangle B
Rectangle C
Triangle D
Whole figure
C2
2
A
D
Find the area of each part of the figure and the whole figure.
2
4
6
Area (square units)

Answers

The area of each part of the figure and then the whole figure, can be found to be :

Triangle A - Triangle B - 2 Rectangle C - 4 Triangle D - Whole figure -

How to find the area ?

The area of Triangle A would be :

= 1 / 2 x  Base x height

= 1 / 2 x ( 2 + 2 + 6 ) x 4

= 1 / 2 x 10 x 4

= 20 units ²

The area of Triangle D is :

= 1 / 2 x base x height

= 1 / 2 x 6 x 2

= 6 units ²

The area of the whole figure would then be:

= 20 + 2 + 4 + 6

= 32 units ²

Find out more on area at https://brainly.com/question/22208939

#SPJ1

A Nigerian visiting India changed N70200 to rupees at the rate of 3 naira to 35 rupees. He spent 224 000 rupees and invested the remaining amount in the State Bank of India at 41.5% simple interest per annum. At the end of 8 months, he transferred the capital and interest to his account in the Modern Bank of Nigeria at the rate of 21 rupees to 2 naira. What was the amount, in naira, credited to his account, to the nearest naira?​

Answers

According to the solving this to the nearest naira, the amount credited to his account is 580,163 Nigerian naira.

Describing percentage:

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the word percent means.

According to the given information:

The Nigerian visitor changed N70200 to rupees at a rate of 3 nairas to 35 rupees. Therefore,

70200 Nigerian naira = 70200 * 35 / 3 = 819500 Indian rupees

He spent 224,000 rupees, so the amount he invested at 41.5% per annum was:

819500 - 224000 = 595500 rupees

The simple interest he earned after 8 months at a rate of 41.5% per annum is:

595500 * (41.5/100) * (8/12) = 129702.5 rupees

So, the total amount he had after 8 months was:

595500 + 129702.5 = 725202.5 rupees

He then transferred this amount to his account in the Modern Bank of Nigeria at a rate of 21 rupees to 2 naira. Therefore,

725202.5 rupees = (725202.5 / 21) * 2 = 580162.5 Nigerian naira

this to the nearest naira, the amount credited to his account is 580,163 Nigerian naira.

To know more about percentage visit:

https://brainly.com/question/30648336

#SPJ9

Angela can shovel the snow from her driveway in 2 hours. When Franklin joins her, the driveway can be finished in just 54 minutes. How long would it take Franklin to shovel the driveway alone?

Answers

By speed formula, it would take Franklin 2 hours and 30 minutes (or 150 minutes) to shovel the driveway alone.

What is speed?

Speed is defined as the distance travelled by an object in a given amount of time. Speed is a scalar quantity, meaning that it has magnitude but no direction.

Mathematically, speed is calculated as follows:

speed = distance / time

where "distance" is the distance travelled by the object, and "time" is the time it takes for the object to travel that distance.

Let's assume that Angela's shoveling rate is "a" and Franklin's shoveling rate is "f" (measured in driveways per hour). We can use the formula:

time = distance / rate

where "distance" is the length of the driveway (which we can assume to be 1 driveway) and "rate" is the shoveling rate (in driveways per hour).

According to the problem, Angela can shovel the driveway in 2 hours, so her shoveling rate is:

a = 1/2

When Franklin joins her, they can finish the driveway in 54 minutes, or 9/10 of an hour. Therefore, their combined shoveling rate is:

(a + f) = 1 / (9/10) = 10/9

We can now set up a system of equations to solve for "f".

First, we know that Angela and Franklin can finish the driveway in 9/10 of an hour:

1/2 + f = 1 / (9/10)

Multiplying both sides by 10/9, we get:

5/9 + (10/9)f = 1

Simplifying, we get:

(10/9)f = 4/9

f = (4/9) * (9/10)

f = 4/10

f = 2/5

Therefore, Franklin's shoveling rate is 2/5 of a driveway per hour. To find how long it would take him to shovel the driveway alone, we can use the formula:

time = distance/rate

time = 1 / (2/5)

time = 5/2

time = 2 1/2 hours

Therefore, it would take Franklin 2 hours and 30 minutes (or 150 minutes) to shovel the driveway alone.

To know more about speed visit:

brainly.com/question/13263542

#SPJ1

PLEASE HELP MARKING BRAINLEIST JUST ANSWER ASAP

Answers

Answer:

The perimeter is the sum of all the sides of the rectangle. So, adding up all the given sides, we get:

Perimeter = 2u + u + 10 + u + 10 + 8u

Simplifying the expression by combining like terms, we get:

Perimeter = 12u + 20

Therefore, the simplified answer for the perimeter is 12u + 20.





HELPPPPP
In 2005, a sample of a radioactive substance had a mass of 600 milligrams. Since then, the sample has decayed by 4.8% each year.
Lett be the number of years since 2005. Let y be the mass of the substance in milligrams.
Write an exponential function showing the relationship between y and t.

Answers

The exponential function that relates the mass of the substance to the number of years since 2005 is: [tex]y = 600 \times e^(-0.048t)[/tex]  . [Where t is a number of years since 2005, and y is mass of the substance in milligrams at that time.]

What is an exponential function?

An exponential function is a mathematical function of the form[tex]f(x) = a^x,[/tex] representing a rapid increase or decrease in value as x increases or decreases.

It represents a rapid growth or decay in value as the independent variable changes, and is used to model many natural phenomena such as population growth, compound interest, and radioactive decay.

The radioactive decay of the substance follows an exponential decay model. The formula for exponential decay is:

[tex]y = a * e^(-rt)[/tex]

Where:

y - amount of substance at time t.

a - initial amount of the substance.

r - decay rate per unit of time.

t - time elapsed since the start of the decay.

In this case, we know that the initial mass of the substance in 2005 was 600 milligrams. We also know that the substance decays by [tex]4.8[/tex]  % each year, which means that the decay rate per year is [tex]0.048[/tex]  (4.8% expressed as a decimal).

Learn more about decay visit:

brainly.com/question/14355665

#SPJ1

i need help asappppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer: A ‍♀️

Step-by-step explanation:

The probability that each item coming off a production line is defective is p and the probability that it is non-defective is q, 0 < p < 1, p + q = 1. At the beginning of a day’s production, a quality control officer repeatedly inspects items each coming off a production line until he inspects n items. Let X be the number of defective items he finds. (a) Write down without proof the probability that X = k, indicating the possible values of k. Hence, by considering the expansion of 〖(p+q)〗^n+〖(q-p)〗^n. Show that the probability that X is even is 1/2[1+〖(1-2p)〗^n] .(Note that 0 is an even number) (b) Find the expected value of X, and write down without proof the variance of X. (c) If E(X) = 0.0125 and Var(X) = 0.9875, find to 4 decimal places the probability that X is odd.

Answers

From the given information provided, the expected value of X = np, the variance of X = npq and the probability that X is odd is 0.4824 rounded to four decimal places.

(a) The probability of finding k defective items out of n can be calculated using the binomial distribution:

P(X=k) = C(n,k) ×[tex]p^k[/tex] × [tex]q^(n-k)[/tex], where C(n,k) is the binomial coefficient.

The possible values of K: 0, 1, 2, ..., n.

To show that the probability that X is even is 1/2[1+(1-2p)ⁿ], we use the binomial theorem to expand (p+q)ⁿ+(q-p)ⁿ as:

(p+q)ⁿ + (q-p)ⁿ = ∑[k=0,n]C(n,k) × [tex]p^k[/tex] × [tex]q^(n-k)[/tex] + ∑[k=0,n]C(n,k) × [tex](-1)^k[/tex] × [tex]p^k[/tex]× [tex]q^(n-k)[/tex]

The first sum corresponds to the probability of finding an even number of defective items, while the second sum corresponds to the probability of finding an odd number of defective items. Therefore,

P(X is even) = (1/2)[(p+q)ⁿ + (q-p)ⁿ]

= (1/2)[(p+q)ⁿ - (p-q)ⁿ] (since q-p = 1-2p)

= (1/2)[(1)ⁿ + (1-2p)ⁿ] (since p+q = 1)

Thus, the probability that X is even is 1/2[1+(1-2p)ⁿ].

(b) The expected value of X is:

E(X) = ∑[k=0,n]k × P(X=k)

= ∑[k=0,n]k × C(n,k) × [tex]p^k[/tex]× [tex]q^(n-k)[/tex]

Using the identity ∑[k=0,n]k × C(n,k) ×[tex]p^k[/tex] × [tex]q^(n-k)[/tex] = np, the expected value simplifies to:

E(X) = np

The variance of X is given by:

Var(X) = E(X²) - [E(X)]²

= ∑[k=0,n]k² × P(X=k) - (np)²

= ∑[k=0,n]k² × C(n,k) × [tex]p^k[/tex] × [tex]q^(n-k)[/tex]- n²p²

Using the identity ∑[k=0,n]k² × C(n,k) ×[tex]p^k[/tex] × [tex]q^(n-k)[/tex] = n(n-1)p² + npq, the variance simplifies to:

Var(X) = n(n-1)p² + npq - n²p²

= npq

(c) Using the formula for the expected value and variance of X, we can write:

0.0125 = E(X) = np

0.9875 = Var(X) = npq

Solving for p and q, we obtain:

p = 0.01 and q = 0.99

Therefore, the probability that X is odd can be calculated using the formula for the probability that X is even derived in part (a):

P(X is odd) = 1 - P(X is even)

= 1 - 1/2[1+(1-2p)ⁿ]

= 1 - 1/2[1+(1-2*0.01)ⁿ]

= 1/2[1-(0.98)ⁿ]

Substituting n = 1/0.98 ln(0.0125/0.01) = 24.68

P(X is odd) = 0.482

Learn more about probability here: brainly.com/question/25870256

#SPJ1

Tristan has $1. 40 worth of nickels and dimesm he has twice as many nickels as dimes

Answers

Tristan has 14 nickels and 7 dimes worth of $1. 40.

This is because 1 nickel is worth 5 cents and 1 dime is worth 10 cents.

Let's use the following variables to represent the number of nickels and dimes Tristan has:

n = number of nickels

d = number of dimes

We know that Tristan has $1.40 worth of nickels and dimes. Each nickel is worth $0.05 and each dime is worth $0.10, so we can write an equation based on their values:

0.05n + 0.1d = 1.4

We also know that Tristan has twice as many nickels as dimes:

n = 2d

We can substitute n = 2d into the first equation and solve for d:

0.05(2d) + 0.1d = 1.4

0.1d + 0.1d = 1.4

0.2d = 1.4

d = 7

So Tristan has 7 dimes. Using n = 2d, we can find the number of nickels:

n = 2(7) = 14

To learn more about nickels :

https://brainly.com/question/24342899

#SPJ4

Finnd the equation of straight line passing through the point (3a,0) and (0,3b) also shwo that the line passese throught the poinits (a , 2bb)

Answers

The point (a,2b) is on the line, and the equation of the line passing through (3a,0) and (0,3b) is y = (-a/b)x + 3b

We can use the two-point form of the equation of a straight line to find the equation passing through the points (3a,0) and (0,3b).

The two-point form of a straight line is given by,

y - y1 = m(x - x1)

where (x1, y1) and (x, y) are two points on the line, and m is the slope of the line.

Let's take the point (3a,0) as (x1, y1) and the point (0,3b) as (x, y). Then, we have:

y - 3b = [(0 - 3a)/(3b - 0)](x - 0)

Simplifying this, we get:

y - 3b = (-a/b)x

y = (-a/b)x + 3b

This is the equation of the line passing through (3a,0) and (0,3b).

Now, to show that this line passes through the point (a,2b), we substitute x = a and y = 2b into the equation of line:

2b = (-a/b)a + 3b

2b = -a + 3b

a = b

Therefore, the point (a,2b) is on the line

Learn more about two-point form here

brainly.com/question/30968874

#SPJ4

98 kilometers in 7 hours = how many kilometers per hour

Answers

Answer:

[tex]\huge\boxed{\sf 14 \ km}[/tex]

Step-by-step explanation:

Given that,

7 hours = 98 km

Divide both sides by 7

7/7 hour = 98/7 km

1 hour = 14 km

[tex]\rule[225]{225}{2}[/tex]

Graph the equation.
y=5|x|

Answers

Answer:

Hope this helps :)

Step-by-step explanation:

Because x is an absolute value, the value of y is always greater than or equal to zero. I attached the graph below. As you'll see, when x is a negative number, it was the same value as the positive of that value. When x = 1 or x = -1, y = 5.

Other Questions
The circle graph shows the results of a survey by a bakery on which of their new products 105 customers preferred most. How many customers preferred cake? Round your answer to the nearest whole number. Which sentence should be rewritten to use the active voice?A. The children in the bounce house shrieked with excitement.B. Chloe dribble the ball confidently down the court.C. Having a good pair of shoes is important on a long hike D. The tea by Alia because she had a stomachache. What is meant by the term optical activity why is it that only certain kinds of molecules are optically active? How do chemists measure the optical activity of molecules A desk is on sale for $380, which is 20% off the original price. Which equation can be used to determine theamount of money saved, s, in dollars, when purchasing this desk on sale?A s= 0. 2(380)BS = (380 = 0. 8) - 380Cs= (380 = 0. 5) 380D8 = (380 = 0. 8) In your opinion, to what extent does the Mahyna represent a radical departure from early Buddhism, as preserved in the Theravda school today? Are these two approaches antithetical to each other or are they largely congruous? Pour lexercice 2 les questions sont: 1) tudier le champ lexical de la lumire et de lombre dans cet extrait 2) quelles sont les connotations associes au mur ?Merci de maider au plus vite car cest pour la rentr merci de vos rponses 1. What percentage of the body is burned if a 16-year-old male burned his entiback, the back of his left leg, and his entire right arm(front and back)?IEntire backBack of leftlegEntire rightarmTotal abscisic acid (aba) is synthesized in the roots in response to decreased soil water potential. aba then translocates to the leaves, where it rapidly alters the osmotic potential of guard cells. what effect would this have on the stomata and the process of transpiration? making effective use of subordination.Some scientists are skeptical about life on other planets. Astronomers calculate that there are many Earth-like planets. Some evidence exists that microbes once survived on Mars. Using the Binomial Distribution Applet answer the following question, A basketball player makes 54% of his shots from the free throw line. Suppose that each of his shots can be considered independent and that he takes 3 shots. Let X the number of shots that he makes. What is the probability that he makes 2 shots or less? 0.09734 10.44010.8425 Explain global emissions of GHGs. For example, the United States has only a small percentage of the world's population but emits a disproportionate share of global CO2. China has a population of over a billion people. What would happen if China "developed" to the point where most families owned an automobile that emitted CO2? What substance released from damaged endothelium triggers the extrinsic coagulation pathway? In what ways does Miss Emily represent a symbol of "days gone by" to her community Choose ONE A. Her home is built in a classic style B. She is buried in a cemetery with other figures of a later era. C. She chooses not to update her hair style. D. She participated in the Civil War use 9 to factor out 45+18 What is the value for the activation energy of the reaction using the information in the table? Which statement best describes why migration increased in the United Statesduring the Great Depression?A. People were forced to leave their homes as punishment for goinginto debt.B. People were able to find cheaper housing prices in cities on theWest Coast.C. People lost their homes and jobs and moved to new places toavoid paying their debts.D. People lost their homes and jobs and moved to new places inhopes of finding employment.SUBMIT An old man had three sons. When they had grown into manhood, he called them together. He ordered them to go out and bring him food and clothing since he was no longer able to provide for himself.The three brothers set out. After a very long while, they came to a large river. They decided to cross the river and then each go their separate ways. In a year's time, they would all meet at the same spot.So, the brothers parted. At the end of the year, they lound their way back to the riverside. The oldest brother asked the youngest brother what he had found during his travels. The boy replied, " have a mirror it you look into it, you can see all over the country"180When the second brother was asked what he had round, he replied, "I have a pair of sandals. If one puts them on, one can walk to any place in the country in one step"Then the oldest brother said, "I have a small bag of medicine, that is all But let us look into the mirror and see how our father is."The three brothers looked into the mirror and saw that their father was dead. The oldest brother said, "Let us hurry. home and see what we can do."So the second brother brought out his sandals, and all three placed their feet inside them. Immediately, they raced to their father's grave. Then the oldest brother shook the medicine out of its bag and poured it over the grave.At once their father stood before them. It was as if nothing had ever been the matter with him. Which clue word in the folktale signals the reason why the old man sent his sons away?100 POINTS BRAINLY!6 MIN DUE. Enter your answer in the provided box.Using the balanced equation for fermentation answer the following questions.C6H12O6(aq)-> 2 C2H6O(aq) + 2 CO2(g)How many grams of glucose are needed to form 2.0 mol of ethanol? Before scientists publish their data and conclusions in scientific journals, they ask other experts in the same field to review the work and ensure that the results and conclusions are valid. What is this process called? The force that keeps a satellite in Earths orbit is directed where?a.always toward the center of the Earthb.always away from the center of Earthc.either toward or away from Earthd.always in the direction the satellite is moving