Answer:
Step-by-step explanation:
The time interval of interest is 6 hours
There is an average of 18 trains per 24 hours or 18/(24/6)=49/12 trains per 6 hours.
The probability can be found using the Poisson distribution with parameter
λ=49/12
Divide 7 and 2 over 3 ÷ negative 3 and 1 over 5.
negative 2 and 19 over 48
negative 24 and 8 over 15
negative 21 and 2 over 15
negative 3 and 19 over 93
Dividing 7 and 2 over 3 ÷ negative 3 and 1 over 5 will give a quotient of negative 2 and 19 over 48
How to determine the quotient of 7 and 2 over 3 ÷ negative 3 and 1 over 5information gotten from the question include
Divide 7 and 2 over 3 ÷ negative 3 and 1 over 5.
Division is a basic mathematical operator that performs the function of sharing
division of fraction is done as follows
7 and 2 over 3
= 7 2/3
= 23/3
negative 3 and 1 over 5.
= -3 1/5
= -16/5
= 23/3 ÷ -16/5
= 23/3 * -5/16
= -115/48
= -2 19/48
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if p || , m<7 = 131°, and m<16 = 88°, find the measure of the missing angle m<4= ?
According to the theorem, the corresponding angles, formed by a transversal on a pair of parallel sides, are always equal.
Also, the sum of angles on a straight line is 180 degree.
The angles 5 and 7 constitute a pair of corresponding angles, formed by the transversal 'r' on the pair of parallel sides 'p' and 'q'. So they must be equal,
[tex]\begin{gathered} \angle5=\angle7 \\ \angle5=131^{\circ} \end{gathered}[/tex]The angles 4 and 5 constitute a straight line, so they must add up to be 180 degrees,
[tex]\begin{gathered} \angle4+\angle5=180^{\circ} \\ \angle4+131^{\circ}=180^{\circ} \\ \angle4=180^{\circ}-131^{\circ} \\ \angle4=49^{\circ} \end{gathered}[/tex]Thus, the angle 4 measures 49 degrees.
Does anybody know the answer to this question?
The values of x and y after solving the given system of equations are respectively.
According to the question,
We have the following two equations:
y = 2x+3 ....(1)
y = 4x-1 .....(2)
Now, we can put the value of y from equation 1 in equation 2:
2x+3 = 4x-1
Now, we can change sides as it will not affect the result.
4x-1 = 2x+3
Moving 2x from the right hand side to the left hand side will result in the change of sign from plus to minus:
4x-2x-1 = 3
2x-1 = 3
2x = 3+1
2x = 4
x = 4/2
x = 2
Now, we can put the value of x in equation 1 to find the value of y:
y = 2x+3
y = 2*2+3
y = 4+3
y = 7
Hence, the value of x is 2 and the value of y is 7 after solving the equations.
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The opposite of the opposite by of 2 is to the_of zero and is written as _
Recall that the opposite of 2 is
[tex]-2.[/tex]Therefore, the opposite of the opposite of 2 is
[tex]-(-2)=2.[/tex]Now, recall that a horizontal number line is of the form:
Therefore, 2 is to the right of zero.
Answer:
On a horizontal number line, the opposite of the opposite of 2 is to the right of zero and is written as 2.
Solve the given linear equation.14x + 4 = 8x + 23x =
We have to solve this linear equation for x:
[tex]\begin{gathered} 14x+4=8x+23 \\ 14x-8x+4-4=8x-8x+23-4 \\ 6x+0=0x+19 \\ 6x=19 \\ x=\frac{19}{6} \\ x\approx3.16\ldots \end{gathered}[/tex]The answer is x=19/6
Help really need it
.........................................
Answer:
you wmekekd
Step-by-step explanation:
which of the following expressions does not represent 7 + 7 + 7 + 7 + 7
7 + 7 + 7 + 7 + 7 means 7 is added 5 times
It could be written as
5(7)
7 x 5 and
7 . 5
But it can not be written as 7^5 because 7^5 means 7 x 7 x 7 x 7 x 7
Hence, 7^5 does not represent the expression 7 + 7 + 7 + 7 + 7
This makes the correct option to be the third option. That is 7^5
Sheila can wash her car in 15 minutes. It takes Bob twice as long to wash the same
car. How long does it take them to wash the car working together
Both Sheila and Bob together can wash the car in 10 minutes
Calculating work :
The formulas to find work and time is given by
Time Taken = 1 / Rate of Work
Rate of Work = 1 / Time Taken
If a work can be done in x number of days, then the work can be done in one day = 1/x
Total Work done = Number of Days × Efficiency ( of the person or machine )
Given that,
Sheila can wash her car in 15 minutes
Let us consider washing the car is 1 unit of work
Then the work can done by Sheila in 1 minute = 1/15
Bob take twice as long as Sheila to wash the same
Bob can wash the same car in 30 minutes
Then the work can done by Bob in 1 minute = 1/30
From above calculation,
The work can be done by Sheila and Bob = (1/15 + 1/30)
= (2+1) /30 = 3/30 = 1/10
So the efficiency of Both Sheila and Bob per minute = 1/10
Let Both can complete the work in x minutes
As we know Total Work done = time × Efficiency
⇒ 1 = x × 1/10
⇒ x = 1 × 10
⇒ x = 10 minutes
Therefore,
Both Sheila and Bob together can wash the car in 10 minutes
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Order of Operations
If you do not use the proper order of operations, you will not get
the correct answer.
Write which operation should be done first.
1.6 + 3 × 2
2.13 – 1 + 4 ÷ 2
3.5 × (7 – 2) + 1
4.(19 + 23) – (4 × 5)
For questions 5 through 8, evaluate the expression for x = 6 and y = 17.
5.4x + 5y
6.12x + (20 – y)
7.x ÷ 3 + y
8.4y ÷ 2 + (8x + 10)
9.Patty made $34 baby sitting on each of 3 weekends. If she spent $50 on gifts
for her family, how much money does she have left?
10.Carlos solved 20 – (2 × 6) + 8 ÷ 4 = 29. Is this the correct answer?
To answer this question, we need to apply the rules of "PEMDAS".
Thus:
- we first deal with the numbers in the "Parentheses" or brackets
- then we perform the "Multiplication" operation
- and then we perform the "Subtraction" operation
This is done as follows:
[tex]6\times14-(9+8)\times2[/tex]- by dealing with the numbers in the parentheses, we get:
[tex]6\times14-(17)\times2[/tex]- now, by dealing with the multiplication, we have:
[tex]84-34[/tex]- finally, we deal with the subtraction, as follows:
[tex]50[/tex]Help me with this question please
Answer:
65
Step-by-step explanation:
First find the area of the triangles
a*b/2 is the equation for triangles
5*6/2 is 15
multiply 15*2 because there are two triangles
15*2=30
Now find the area of the rectangle
5*7=35
Then add.
30+35=65
:)
Select all ratios equivalent to 3:6
18:9. 4:8. 11:12
Answer:
4:8
Step-by-step explanation:
Equivalent ratios have the same simplified ratio.
The simplified ratio of 3:6 is 1:2. We can get it by dividing both sides of the ratio by a common factor of 3.
18:9 is incorrect because its simplified ratio is 2:1. Equivalent ratios have the same order.
4:8 is correct because dividing both sides of the ratio by 4 gives us 1:2.
11:12 is incorrect because it can not be simplified to give 1:2.
PLEASE HELP ASAP!!!!
The quadratic function f(x) has roots of −4 and 2 and point (1, −5) lies on f(x). What is the equation of f(x)?
f(x) = (x − 2)(x + 4)
f(x) = (x − 2)(x − 4)
f(x) = 4(x − 2)(x + 4)
f(x) = 4(x − 2)(x − 4)
The equation of the quadratic function f(x) is f(x) = (x + 4)(x - 2)
How to determine the equation of f(x)?From the question, we have the following parameters:
Roots = -4 and 2
Point = (1, -5)
Rewrite the given parameters as
Roots: x = -4 and x = 2
Point: (x, y) = (1, -5)
Recall that:
x = -4 and x = 2
This gives
x + 4 = 0 and x - 2 = 0
Multiply the equations
So, we have
y = a(x + 4)(x - 2)
When (x, y) = (1, -5), we have
-5 = a(1 + 4)(1 - 2)
This gives
a = 1
Substitute a = 1 in y = a(x + 4)(x - 2)
y = (x + 4)(x - 2)
Hence, the equation of f(x) = (x + 4)(x - 2)
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Answer:
f(x) = (x − 2)(x + 4)
Hope this helps you
a boat traveled 27miles in 2hours at this rate how many miles will the boat travel in 1/2 hours?
Answer:
6.75 miles
Step-by-step explanation:
27/2 = 13.5
27/4 = 6.75
27 miles in 2 hours
13.5 in 1 hour
6.75 in half an hour :)
Answer: 6.75 miles
Step-by-step explanation:27/4=6.75, I divided by 4 to get the half hour
please help with the question below (please add an explanation)
In order to get the volume of the irregular figure, let's cut it into two regular figures. See the cut below.
First, let's calculate the volume of the upper part.
The dimensions of the upper part are 7cm by 3 cm by 3 cm. Since the shape is a rectangular prism, let's multiply 7, 3, and 3.
[tex]V_{upper}=7cm\times3cm\times3cm=63cm^3[/tex]Hence, the volume of the upper figure is 63 cm³.
Let's now calculate the volume of the lower figure.
The dimensions of the lower figure are 5cm by 4 cm by 3 cm. Since this is a rectangular prism too, let's multiply the dimensions.
[tex]V_{lower}=5cm\times4cm\times3cm=60cm^3[/tex]The volume of the lower figure is 60 cm³.
Let's add the volume of the two figures to get the volume of the entire irregular figure.
[tex]V_{irregular}=V_{upper}+V_{lower}[/tex][tex]V_{irregular}=63cm^3+60cm^3=123cm^3[/tex]Therefore, the entire volume of the given irregular figure is 123 cm³.
Lana and raul are participating in a walk-a-thon at the local community college track to raise money. lana can walk around the track in 4 minutes. raul can walk around the track in 6 minutes. lana and raul started walking at the same time. question: how many minutes will it be until they complete a lap at the same time?
The minutes will it be until they complete a lap at the same time is 2.4 minutes
How to calculate the time?From the information, Lana can walk around the track in 4 minutes and Raul can walk around the track in 6 minutes.
Lana will cover a distance of 1/4 while Raul will be represented as 1/6.
This will be illustrated as:
1/4 + 1/6 = 1
3/12 + 2/12 = 1
5x/12 = 1
Cross multiply
5x = 12
x = 12/5
x = 2.4 minutes
Note that x = number of minutes
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I need this answer asap!! Taylor earned $338.00 at her job when she worked for 20 hours. What was her hourly wage, in dollars per hour?
Answer:
$16.90 per hour
Step-by-step explanation:
You want the hourly wage Taylor earned when she worked 20 hours for $338.00.
Hourly wageTo find dollars per hour, divide dollars by hours:
$338.00/(20 h) = $16.90/h
Taylor earned $16.90 per hour.
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you want to rearrange the furniture in your room. you use a coordinate plane to plan your changes. the vertices of the dresser are given below. Give the coordinates of the dresser after rotating the dresser 180* about the origin, translating 2 units left and 3 units up.
A(-1,-1), B(2,-1), C(2,1), D(-1,1) HELP ASAP!!! I NEED IT RIGHT NOW PLEASE ANYONE!!!
The coordinates of the dresser
i.e A(-1,-1), B(2,-1), C(2,1), D(-1,1)
after rotating the dresser 180 degrees about the origin, translating 2 units left and 3 units up becomes
A(3, 2), B(0, 2), C(0,0), D(3, 0)
What is translation?It is the movement of the shape in the left, right, up, and down directions.
The translated shape will have the same shape and shape.
There is a positive value when translated to the right and up.
There is a negative value when translated to the left and down.
We have,
The coordinates of the vertices of the dresser.
A(-1,-1), B(2,-1), C(2,1), D(-1,1).
Now,
Rotating 180 degrees the coordinates become,
A(2, 1), B(-1, 1), C(-1, -1), D(2, -1)
Translating 2 units left.
The coordinates become:
A(2-2, 1-2), B(-1-2, 1-2), C(-1-2, -1-2), D(2-2, -1-2)
A(0, -1), B(-3, -1), C(-3, -3), D(0, -3)
Translating 3 units up.
The coordinates become:
A(0+3, -1+3), B(-3+3, -1+3), C(-3+3, -3+3), D(0+3, -3+3)
A(3, 2), B(0, 2), C(0,0), D(3, 0)
Thus,
The coordinates of the dresser
i.e A(-1,-1), B(2,-1), C(2,1), D(-1,1)
after rotating the dresser 180 degrees about the origin, translating 2 units left and 3 units up becomes
A(3, 2), B(0, 2), C(0,0), D(3, 0)
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Part A Write the multiplication expression shown by the model. Do not solve the problem.
Explain the expression written in Part B. Include the final product and how it is shown with the model.
The multiplication model represented by the image is given as follows:
12(4 x 10) + (3 x 10) + (6 x 10) + 18.
What is a multiplication operation?A multiplication operation is equivalent to consecutive additions.
For the green squares, the following addition is obtained:
10 + 10 + 10 + 10 + 6.
(which is the number of squares painted green).
Considering a multiplication with consecutive additions, it is written as follows:
4 x 10 + 6.
For the red squares, the expression is:
4 + 4 x 10 + 2 = 4 x 10 + 6.
For the blue squares, the expression is:
8 + 3 x 10 + 8
3 x 10 + 16
For the white squares, the expression is:
2 + 6 x 10
Hence the total model is calculated as follows:
4 x 10 + 6 + 4 x 10 + 6 + 3 x 10 + 16 + 2 + 6 x 10
(4 x 10)(6 + 6) + (3 x 10) + (6 x 10) + 18.
12(4 x 10) + (3 x 10) + (6 x 10) + 18.
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P(x) = x³- 2x² + 5x.
factor p completely
Answer:
P(x) = x (x²- 2x + 5)
Step-by-step explanation:
First factor x out:
P(x) = x (x²- 2x + 5)
Then, try to simplify (x²- 2x + 5):
However, there is no way to further simplify.
So, the answer should be x (x²- 2x + 5).
Currently Madeline makes $28,800 a year. Based on the following list ofmonthly expenses, find Madeline's adjusted monthly income (AMI).Student Loan:$250 (5 years remaining)Car Loan:$180 (6 months remaining)Personal Loan:$150 (30 months remaining)Apartment Lease: $425 (4 months remaining)>Gas/Electric:~$115 each month
Given:
yearly salary=28,800
Required:
To calculate adjusted monthly income
Explanation:
student loan
250 dollar
A line passes through the points (-18, -2) and (9, 10). Find this line's equation in point-slope form. Using the point (-18, -2), this line's point-slope form equation is [ ]Using the point (9, 10), this line's point-slope form equation is [ ]
We know that the point-slope formula is given by:
y − y₁=m(x − x₁)
where the terms: m, y₁ and x₁ are numbers.
Given that the line passes through a given points we have that:
m is the slope of the line
y₁ is the y value of that given point
x₁ is the x value of that given point
Finding the slopeWe want to find the slope m, having that
(x₁, y₁) = (-18, -2)
(x₂, y₂) = (9, 10)
The slope is always a rate of change. It is:
m = Δy/Δx,
where Δ means "change"
Step 1: finding the change of each term x and y
Δy = change of y = y₂ - y₁
Δy = 10 - (-2) = 12
Δx = change of x = x₂ - x₁
Δx = 9 - (-18) = 27
Step 2: dividing the found quantities
Then
m = Δy/Δx = 12/27
m = 4/9
Step 3: replacing in the equation
Using the equation, we have that
y − y₁ = m(x − x₁)
replacing m:
y − y₁= 4/9(x − x₁)
Step 4: replacing each pointFor the first point: (-18, -2)
We have that (x₁, y₁) = (-18, -2)
since the equation is
y − y₁ = 4/9(x − x₁)
replacing each term for each number of the given coordinate
y − (-2) = 4/9(x − (-18))
y + 2 = 4/9(x + 18)
Equation: y + 2 = 4/9(x + 18)
For the second point: (9, 10)
We have that (x₂, y₂) = (9, 10)
since the equation is
y − y₂ = 4/9(x − x₂)
replacing each term for each number of the given coordinate
y − (10) = 4/9(x − (9))
y - 10 = 4/9(x - 9)
Equation: y - 10 = 4/9(x - 9)
Use the information on the diagonal to find: a. the length ACb. the length ABc. the perimeter of quadrilateral ABCDd. the area of quadrilateral ABCD
A) To find the length AC, we must use the trigonometric ratio
[tex]\cos \text{ 31 =}\frac{adjacent}{hypothenuse}[/tex]adjacent = 5cm
hypothenuse = AC
[tex]\begin{gathered} \cos 31\text{ = }\frac{5}{AC} \\ AC\text{ = }\frac{5}{\cos 31} \\ AC\text{ =}5.8332\operatorname{cm} \end{gathered}[/tex]B) To find the length AB, we will use the value of AC just obtained to get it
since triangle ABC is a right-angled triangle, we will use Pythagoras theorem
so that
|AC|^2 = |AB|^2 +|BC|^2
AC = 5.8332cm
BC = 4cm
|AB|^2 = |AC|^2 - |BC|^2
[tex]\begin{gathered} AB\text{ = }\sqrt[]{5.8332^2-4^2} \\ AB\text{ = }\sqrt[]{18.0262224} \\ AB\text{ = 4.245729883cm} \end{gathered}[/tex]C) The perimeter of the quadrilateral can be found by adding the length of all the sides around its edges.
Perimeter = AD +CD + BC + AB
We do not have CD and we must find CD
[tex]\begin{gathered} CD\text{ = }\sqrt[]{|AC|^2-|AD|^2} \\ CD\text{ =}\sqrt[]{5.8332^2-5^2} \\ CD\text{ =}\sqrt[]{9.02622224} \\ CD\text{ = 3.004366195cm} \end{gathered}[/tex]Perimeter of ABCD = 5 + 3.004366195 + 4 +4.245729883 = 16.25009708cm
D) To find the area of the quadrilateral we must find the area of triangle ADC and triangle ABC.
Area of triangle ADC = 1/2 x base x height= 1/2 x 3.004366195 x 5 = 7.510915488 square centimeter
Area of triangle ABC = 1/2 X base x height = 1/2 x 4 x 4.245729883 =8.491459766 square centimeter
Area of quadrilateral ABCD = 7.510915488 + 8.491459766 = 16.00237525 square centimeter
If a rectangle is drawn and another rectangle is drawn so that the sides are twice asbig as the first rectangle, what happens to the area? (remember k^2 for area)A.) quadruplesB.) doublesC.) triplesD.) not enoughInformation
Let the rectangle with side as x and y.
Determine the area of the rectangle.
[tex]\begin{gathered} A=x\cdot y \\ =xy \end{gathered}[/tex]The sides of the rectangle is increased by twice means that new sides are 2x and 2y.
Determine the area of new rectangle.
[tex]\begin{gathered} A^{\prime}=2x\cdot2y \\ =4xy \\ =4A \end{gathered}[/tex]So new area is four times the previous rectangle.
Thus correct answer is option A quadruples.
what is 1.025 as a fraction?
The decimal number 1.025 is 41/40 in fractions.
What is Number system?A number system is defined as a system of writing to express numbers.
A fraction is a part of a whole
The decimal number one point zero two five should be converted to fraction.
The conversion of 1.025 to fraction is 41/40.
If we calculate 41/40 we get the value 1.025.
Hence 1.025 is 41/40 in fractions.
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please help thank you
Write an exponential expression equivalent to 8^3 that has a base of 2.
Answer:
2^9
Step-by-step explanation:
8 is [tex]2^3\\[/tex], so we can replace [tex]8^3[/tex] for [tex](2^3)^3[/tex]
Exponents separated by parenthesis, multiply.
So [tex](2^3)^3=2^9[/tex]
can you help mw with my work?
In this problem the function that models the hight is:
[tex]h(t)=-5t^2+14t+3[/tex]So when the water hits the grownd h=0 so we replace that and solve for t so:
[tex]0=-5t^2+4t+3[/tex]To solve this expression we can use the cuadratic equation:
[tex]x=\frac{-4\pm\sqrt[]{16-4(-5)(3)}}{-10}[/tex]and we operate so:
[tex]\begin{gathered} x=\frac{-4\pm\sqrt[]{76}}{-10} \\ x=\frac{-4\pm8.7}{-10} \end{gathered}[/tex]Now we solve bout of the equation so:
[tex]\begin{gathered} x_1=\frac{-4+8.7}{-10}=-0.47 \\ x_2=\frac{-4-8.7}{-10}=1.27_{} \end{gathered}[/tex]So the answer that have sense is the secon one so the water hits the ground after 1.27 seconds
refrigerant r-410a is a mixture of refrigerants r-32 and r-125. it takes 60 pounds of r-32 and 40 pounds of r-125 to make 100 pounds of r-410a. find the ratio of r-32 to r-125. fill in the blanks with the correct answer.
The ratio of r-32 to r-125 is 3:2
A ratio in math displays how many times one number is contained in another. Comparing two numbers by dividing them is how ratios work. Your formula would be A/B if you were contrasting one data point (A) with another data point (B). When both sides of a ratio are whole numbers and cannot be divided by a whole number, the ratio is in its simplest form.
Given,
Refrigerant r-32 and r-125 are the two main constituents of refrigerant r-410.
60 pounds of r-32 and 40 pounds of r-125 make up to 100 pounds of r-410.
The ratio of r-32 to r-125 = 60/40 =3/2.
Hence, the required ratio of r-32 to r-125 is 3:2
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Tom’s car has 11 1/9 gallons of gas. If he uses 3/8 of the gas, how much gas does the car have left?
Answer:
10.736
Step-by-step explanation:
11 1/9 - 3/8 =10/53/72
= 10.736
at a tree farm,there are nine rows of 36 Spruce trees . in each row 14 of the spruce trees are blue spruce how many Spruce tree‘s are not blue spruce?
Answer: 198
Step-by-step explanation:
9 * 36 = 324
9 * 14 = 126
324 - 126 = 198
Hope this helps!