The Max or Min can be found by using the line of symmetry. That line of symmetry can be found by finding the midpoint of the two x-intercepts.Since the line of symmetry is x =-1 Write the function rule to find the coordinate to the minimum of this parabola.[tex]f (x) = (x - 2)(x + 4)[/tex]your answer should be in the form (_,_)

The Max Or Min Can Be Found By Using The Line Of Symmetry. That Line Of Symmetry Can Be Found By Finding

Answers

Answer 1

We know that, for a parabola, the minimum, or the maximum, is given by the vertex of the parabola. The formula for the vertex of the parabola is given by:

[tex]x_v=-\frac{b}{2a},y_v=c-\frac{b^2}{4a}[/tex]

And we have the coordinates for x and y for the vertex.

We can see that the line of symmetry is x = -1, and this is the same value for the value of the vertex for x-coordinate, that is, the x-coordinate is equal to x = -1.

With this value for x, we can find the y-coordinate using the given equation of the parabola:

[tex]f(x)=(x-2)\cdot(x+4)\Rightarrow f(-1)=(-1-2)\cdot(-1+4)\Rightarrow f(-1)=(-3)\cdot(3)[/tex]

We can also expand these two factors, and we will get the same result:

[tex]f(x)=(x-2)\cdot(x+4)=x^2+2x-8=(-1)^2+2\cdot(-1)-8=1-2-8=-1-8=-9[/tex]

Therefore, the value for the y-coordinate (the value for the y-coordinate of the parabola, which is, at the same time, the minimum point for y of the parabola) is:

[tex]f(-1)=(-3)\cdot(3)\Rightarrow f(-1)=-9[/tex]

The minimum point of the parabola is (-1, -9) (answer), and we used the given function (rule) to find the value of the y-coordinate.

We can check these two values using the formula for the vertex of the parabola as follows:

[tex]f(x)=(x-2)\cdot(x+4)=x^2+2x-8[/tex]

Then, a = 1 (it is positive so the parabola has a minimum), b = 2, and c = -8.

Hence, we have (for the value of the x-coordinate, which is, at the same time, the value for the axis of symmetry in this case):

[tex]x_v=-\frac{2}{2\cdot1}\Rightarrow x_v=-1[/tex]

And for the value of the y-coordinate, we have:

[tex]y_v=c-\frac{b^2}{4a}\Rightarrow y_v=-8-\frac{2^2}{4\cdot1}=-8-\frac{4}{4}=-8-1\Rightarrow y_v=-9[/tex]


Related Questions

Zales sells diamonds for $1,100 that cost $800. What is Zales’s percent markup on selling price? Check the selling price.

Answers

Zale's percent mark up is 37.5 percent.

How to find the percent mark-up?

Mark up percentage is calculated by dividing the gross profit of a unit by the cost of that unit.

In other words, Mark-up percentage is the difference between a product's selling price and cost as a percentage of the cost.

Therefore, Zale's sells diamonds for $1,100 that cost $800.

Hence,

mark up = 1100 - 800

mark up = $300

percentage mark up = 300 / 800 × 100

percentage mark up = 30000 / 800

Therefore,

percentage mark up = 37.5%

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What is the solution to the equation below? √x+9 = 11 O A. x= 2 O B. X= √ O C. x = 42 D. x = 4

Answers

[tex]\begin{gathered} \sqrt[]{x}+9=11 \\ \sqrt[]{x}+9-9=11-9 \\ \sqrt[]{x}=2 \\ (\sqrt[]{x})^2=2^2 \\ x=4 \end{gathered}[/tex]

answer: D. x = 4

How do you solve the system of equations by graphing? y=-3x/2 + 6y=5x - 7

Answers

The given system of equations are

y=-3x/2 + 6

y=5x - 7

We would substitute values for x into the equations and find the corresponding y values. These values would be plotted on a graph. Where the lines of both equations meet would represent the solution of the system of equations.

For the first equation,

y = - 3x/2 + 6

if x = 0, y = 3 * 0/2 + 6 = 6

If x = 1, y = - 3 * 1/2 + 6 = 4.5

if x = 2, y = - 3 * 2/2 + 6 = 3

We would plot these values on the graph

For the second equation,

y = 5x - 7

if x = 0, y = 5 * 0 - 7 = - 7

If x = 1, y = 5 * 1 - 7 = - 2

if x = 2, y = 5 * 2 - 7 = 3

We would plot these values on the graph

The diagram of the graph is shown below

Looking at the graph, at the point where both lines meet,

x = 2, y = 3

Thus, the solution is (2,3)

a loaf of sandwich bread contains 24 slices. which of these tables correctly shows the ratios of different of loaves of bread to the number of total slices they contain

Answers

We have that a loaf of sandwich bread contains 24 slices, then we have that the ratio must be constant between the loaves and the slices. If we have 1 loaf: 24 slices, this ratio must be equal in the table.

Therefore, we have that the only table that follows this is the table that has:

If we have:

2/48 = 1/24

3/72 = 1/24

4/96 = 1/24

The ratio of loaves to slices is the same, that is, 1 / 24.

As the table shows, projections indicate that the percent of adults with diabetes could dramatically increase.Answer parts a. through c.c. In what year does this model predict the percent to be 27.96%(round to the closest year)

Answers

b. You have to consider year 2000 as the initial year, i.e. as x=0.

To predict the percent of adults with diabetes in 2014, first, you have to calculate the difference between this year and the initial year to determine which value of x you need to use:

[tex]x=2014-2000=\text{ }14[/tex]

The value of x you have to use is x=14

Replace this value into the linear model calculated in item a to predict the percentage of adults with diabetes (y)

[tex]\begin{gathered} y=0.508x+10.692 \\ y=0.508\cdot14+10.692 \\ y=7.112+10.692 \\ y=17.804 \end{gathered}[/tex]

In the year 2014, the predicted percentage of adults with diabetes is 17.8%

c. You have to determine the year in which the model predicts the percent to be 27.96%.

To determine this year, you have to equal the linear model to 27.96% and calculate for x:

[tex]\begin{gathered} y=0.508x+10.692 \\ 27.96=0.508x+10.692 \end{gathered}[/tex]

-Subtract 10.692 from both sides of the equal sign

[tex]\begin{gathered} 27.96-10.692=0.508x+10.692-10.692 \\ 17.268=0.508x \end{gathered}[/tex]

-Divide both sides by 0.508

[tex]\begin{gathered} \frac{17.268}{0.508}=\frac{0.508x}{0.508} \\ 33.99=x \\ x\approx34 \end{gathered}[/tex]

Next, add x=34 to the initial year:

[tex]2000+34=2034[/tex]

The model predicts the percentage to be 27.96% for the year 2034

n is equal to 30% of 600

Answers

Given:

[tex]n=\frac{30}{100}\times600[/tex]

Solve the expression,

[tex]\begin{gathered} n=\frac{30}{100}\times600 \\ n=30\times6 \\ n=180 \end{gathered}[/tex]

Answer: n = 180

I need to use my work and I don’t know what to put please help me !!!

Answers

We are given the information that Bailey reads 2 and a half books in 3 and a third weeks.

2 and a half books can be seen as 5/2 books, just as follows

[tex]2\frac{1}{2}\text{ = }\frac{4}{2}+\frac{1}{2}\text{ = }\frac{5}{2}[/tex]

On the other hand, 3 and a third weeks can be seen as 10/ weeks, just as follows:

[tex]3\frac{1}{3}\text{ = }\frac{9}{3}+\frac{1}{3}=\text{ }\frac{10}{3}[/tex]

Next, we just have to use a rule of three, its as follows: "if Bailey read 5/ books in 10/3 weeks, how many books does she reads per week?"

[tex]\begin{gathered} 10/3\text{ --> 5/2} \\ 1\text{ --> x} \end{gathered}[/tex]

With that, we proceed with the division:

[tex]\frac{\frac{5}{2}}{\frac{10}{3}}\text{ = }\frac{15}{20}\text{ = }\frac{3}{4}[/tex]

That means that Bailey reads 3/4 books per week

What is the value of the expression below when w = 3?3w² - 6w - 4

Answers

ANSWER:

5

STEP-BY-STEP EXPLANATION:

We have the following expression:

[tex]3w^2-6w-4\:[/tex]

We substitute the value of w, when it is equal to 3, just like this:

[tex]\begin{gathered} 3\left(3\right)^2-6\left(3\right)-4\: \\ \\ 3\cdot \:9-6\left(3\right)-4 \\ \\ 27-18-4 \\ \\ 5 \end{gathered}[/tex]

The value of the expression is equal to 5

URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS

Answers

Answer:

√52

Step-by-step explanation:

[tex] \sqrt{ {(4 - ( - 2))}^{2} + {(1 - ( - 3))}^{2} } [/tex]

[tex] \sqrt{ {6}^{2} + {4}^{2} } = \sqrt{36 + 16} = \sqrt{52} [/tex]

A biologist wants to determine the effect of a new fertilizer on tomato plants. What would be the control?All PlantsPlants not treated with the Fertilizer.The FertilizerPlants treated with the Fertilizer.

Answers

Remember that the control variable does not change in the experiment or in any study.

So the control here will be all the plants because you can not control the type of the plant.

Answer:b

Step-by-step explanation:

Someone please help me with this

Answers

 Polynomial equations are those created using exponents, coefficients, and variables. It may have several exponents, with the higher one being referred to as the equation's degree.

How are polynomial equations solved?

Polynomial equation illustration

     Write a polynomial equation in standard form before attempting to solve it. Factor it, then set each variable factor to zero after it has reached zero. The original equations' answers are the solutions to the derived equations. Factoring cannot always be used to solve polynomial equations.

6h²(5 + 9h)(5 - 9h)

6h²(9h + 5)(5 - 9h)

6h²(9h + 5)(-9h + 5)

Distribute

6h²(9h + 5)(-9h + 5)

54(-9h +5)h³ + 30(-9h + 5)h²

(-486h)4 + 270h³+30(-9h+5)h²

(-486h)4 + 270h³-270h³+150h²

(-486h)4 + 150h²

Solution

(-486h)4 + 150h²

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A student takes out 2 loans to pay for college. One loan at 8% interest and the other at 9% interest. The total amount borrowed is $3,500, and the interest after 1 year for both loans is $294. Find the amount of each loan.

Answers

The amount of each loan are $2,100 and $1,400.

What is mean by Simple interest?

The simple interest is defined as;

Simple interest = P r t

Where, P is principal amount.

r is rate and t is time period.

Given that;

Student take 2 loans for pay the college.

One loan at 8% interest and the other at 9% interest.

And, The total borrowed amount = $3,500

and, The interest loan = $294

Let The first amount of loan = x

And, The other amount of loan = y

So, We can formulate;

x + y = $3,500  ..... (i)

And, The interest loan = $294

So, We can formulate;

8x/100 + 9y/100 = $294  

8x + 9y = 29400  ... (ii)

Solve equation (i) and (ii) , we get;

Multiply by 8 in equation (i) and subtract from (ii), we get;

y = $1400

Hence,

x + y = $3,500

x + 1400 = 3500

x = 3500 - 1400

x = $2,100

Therefore, The amount of each loan are $2,100 and $1,400.

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2. Find the equation ofthe line:through (-5,1) parallel to2y = 2x - 4

Answers

Given data:

The given point is (a,b)=(-5,1).

The given line is 2y=2x-4.

The given line can be written as,

2y=2(x-2)

y=x-2

The standard equation of the line is,

y=mx+c

comapre the given line with the standard form.

m=1

The slope of two parallel lines are always equal.

m'=m

=1

The expression of the line which is parallel to the given line is,

y-b=m'(x-a)

Substitue the given values in the expression.

y-1=1(x-(-5))

y-1=x+5

y=x+6.

Thus, the equation of the line parallel to the given line is y=x+6.

For each value of y, determine whether it is a solution to y÷2 = 6.
y
6
16
10
14
Is it a solution?

Answers

Answer:

None are solutions.

Step-by-step explanation:

Divide each value of y by 2 and see if it equals 6. If it does, then it is a solution. If it doesn't then it isn't a solution.

6 ÷ 2 = 6

3 ≠ 6

not a solution

16 ÷ 2 = 6

8 ≠ 6

not a solution

10 ÷ 2 = 6

5 ≠ 6

not a solution

14 ÷ 2 = 6

7 ≠ 6

not a solution

Martin Brothers Moving rents moving vans by the hour. The company charges a flat fee of $17.99, plus an additional $19.99 per hour. One customer pays $57.97 for her rental. How long was her rental?

Answers

Let h be the number of hours that the customer rented the van, then we can set the following equation:

[tex]19.99h+17.99=57.97.[/tex]

Subtracting 17.99 from the above equation we get:

[tex]\begin{gathered} 19.99h+17.99-17.99=57.97-17.99, \\ 19.99h=39.98. \end{gathered}[/tex]

Dividing by 19.99 we get:

[tex]\begin{gathered} \frac{19.99h}{19.99}=\frac{39.98}{19.99}, \\ h=2. \end{gathered}[/tex]

Answer: 2 hours.

i need help with this question parts 3 - 7

Answers

Answer:

i also don't know

Step-by-step explanation:

i also don't know..,......

Yes or no to tell wether the fact the fraction is equivalent to this decimal __(4.05)_____________________________________Is the following fractions equal to the one decimal listed? 405/99401/9981/33802/198

Answers

802/198​ is equal to 4.0505

Use the sequence below to complete each task. 34, 25, 16, 7, ... a. Identify the common difference (a). b. Write an equation to represent the sequence. c. Find the 20th term (azo)

Answers

Problem

Solution

We have the following sequence of terms 34,25,16,7,....

Part a

The common difference for this case would be:

25-34= -9

16-25=-9

7-16= -9

Then the answer for part a would be -9

Part b

We want to write the following form:

an = a1 + (n-1) d

For this case d=-9, a1= 34

And then we can write the genral expression like this:

an = 34 + (n-1 ) (-9)

With n = 1,2,3,4....

Part c

In order to find the 20 th term we can replace n =20 and we got:

a20= 34 + (20-1) (-9) = 34-171= -137

how to solve 4(a+1)=12how to solve 13+2k=5+4khow to solve -4e+28=10ehow to solve -6(4+c)=-66

Answers

In this problem, we must solve some linear equations.

1)

[tex]\begin{gathered} 4\cdot(a+1)=12, \\ a+1=\frac{12}{4}, \\ a+1=3, \\ a=3-1, \\ a=2. \end{gathered}[/tex]

2)

[tex]\begin{gathered} 13+2k=5+4k, \\ 13-5+2k=4k, \\ 8+2k=4k, \\ 4k-2k=8 \\ 2k=8, \\ k=\frac{8}{2}, \\ k=4. \end{gathered}[/tex]

3)

[tex]\begin{gathered} -4e+28=10e, \\ 28=10e+4e, \\ 28=14e, \\ e=\frac{28}{14}, \\ e=2. \end{gathered}[/tex]

4)

[tex]\begin{gathered} -6(4+c)=-66, \\ 4+c=\frac{-66}{-6}, \\ 4+c=11, \\ c=11-4, \\ c=7. \end{gathered}[/tex]

Answers

• a = 2

,

• k = 4

,

• e = 2

,

• c = 7

helpppppppppppppppppppppppppppppp

Answers

Step-by-step explanation:

im still working on the 2nd part

simplest form , 7/6 ÷ 4

Answers

[tex]\text{ }\frac{7}{6}\text{ / 4 = }\frac{\frac{7}{6}}{\frac{4}{1}}\text{ = }\frac{7}{24}[/tex]

The answer is 7/24

Question 2.Draw diagrams to represent the following situations.a. The amount of flour that the bakery used this month was a 50% increase relative to last month.b. The amount of milk that the bakery used this month was a 75% decrease relative to last month.

Answers

Given:

a. The amount of flour that the bakery used this month was a 50% increase relative to last month.

So, we will draw a diagram that represents the situation

As shown, for last month, we have drawn a rectangle divided into two equal areas, each one represents 50%

this month was a 50% increase, so, we have drawn 3 areas which represent 50% increase

b. The amount of milk that the bakery used this month was a 75% decrease relative to last month.

As shown, for last month, we have drawn a rectangle with four equal areas

75% decrease, so, we have to remove 3 areas to make the remaining = 25%

So, the difference will give a 75% decrease

A COMPUTER OPERATOR MUST SELECT FOUR JOBS AMOUNG 10 AVAILABLE JOB WAITING TO BE COMPLETED. HOW MANY DIFFERENT ARRANGMENTS CAN BE MADE?

Answers

Explanation

This is a problem based on permutations. We must select four jobs among ten jobs and see how many arrangments can be made.

The formula for the number of permutations is:

[tex]P(n,r)=\frac{n!}{(n-r)!}.[/tex]

Where:

• n = total number of jobs = 10,

,

• r = number of jobs to be selected = 4.

Replacing these data in the formula above, we get:

[tex]P(10,4)=\frac{10!}{(10-4)!}=\frac{10!}{6!}=\frac{10\cdot9\cdot8\cdot7\cdot6!}{6!}=10\cdot9\cdot8\cdot7=5040.[/tex]Answer

5040

A triangle can have sides 2,3 and 5. True or false

Answers

First, remember that:

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

In this problem, notice that:

2 + 3 is not greater than 5.

3 + 5 is not greater than 2.

2 + 5 is not greater than 3.

So, the statement is false. A triangle can't have sides 2

The equation y + 2 = 5(x – 4) represents a linear function. What is the y-intercept of the equation?

Answers

Answer:

-22

Step-by-step explanation:

Hello!

We can convert it into Slope-Intercept form: [tex]y = mx + b[/tex]

m = slopeb = y-intercept

Converty + 2 = 5(x - 4)y + 2 = 5x - 20y = 5x - 22

The y-intercept is -22.

If g(x)=f(x)−1, then g(x) translates the function f(x) 1 unit _[blank]_.Which word correctly fills in the blank in the previous sentence?A. upB. leftC. downD. right

Answers

To answer this question, we need to remember the rules of transformations of functions, the rules are shown below:

From the table, we notice that if we subtract a number we are performing a vertical translation down.

Therefore, the correct word to fill the blank is down and the correct option is C.

Answer the following question by creating an exponential equation? 1. On the day a rumor was started, 4 people knew about the rumor. The next day, and onward, the number of people who knew about the rumor doubled. On what day did 800 people know about the rumor?

Answers

Given

Series of numbers

first day = 4

second day = 8

Third day = 16

4, 8, 16, ...

From the exponential sequence

First term a = 4

common ratio r = second term/first term

= 8/4 = 2

r = 2

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A person standing close to the edge on top of a 72-foot building throws a ball vertically upward. The
quadratic function h(t) = − 16t² + 84t+ 72 models the ball's height about the ground, h(t), in feet, t
seconds after it was thrown. Please help me identify the height of the ball in feet and how many seconds it takes to hit the ground

Answers

The height of the ball was 182.25 feet and it took 6 seconds for the ball to hot the ground.

Given that:-

Quadratic equation:-

[tex]h(t)=-16t^2+84t+72[/tex]

We have to find the ball's height, in feet and how many seconds it takes to hit the ground.

Differentiating the given equation, we get

dh/dt=-32t + 84

Putting dh/dt = 0, we get,

-32t + 84 = 0

t = 84/32 = 21/8 seconds

Putting t = 21/8, we will get the maximum height that the ball will reach.

Hence,

[tex]h(21/8)=-16(21/8)^2+84(21/8)+72[/tex]

h(21/8) = -16(441/64)+84(21/8)+72 = -110.25 + 220.50 +72 = 182.25 feet

At h = 0, the ball will have hit the ground.

Hence, we can write,

[tex]h(t) = 0 = -16t^2+84t+72[/tex]

Dividing -4 from the equation, we get,

[tex]4t^2-21t-18=0[/tex]

Using middle term split theorem, we can write,

[tex]4t^2-24t+3t-18=0\\[/tex]

4t(t-6)+3(t-6) = 0

(t-6)(4t+3) = 0

Hence, the values of t can be:-

t = 6, -3/4

As the time cannot be negative, hence the ball will hit the ground after 6 seconds.

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What’s 1/5 + 1/2 ? Pls help me

Answers

We need to calculate 1/5 + 1/2:

H = 1/5 + 1/2

Then: H = 7/10

the diameter of the bagels 4.2 in what is the biggest circumference in inches

Answers

Diammeter = 4.2 inch

Radius = diammeter/2 = 4.2/2 =2.1 inch

[tex]\text{Circumference =2}\times\text{ }\pi\times r[/tex][tex]\begin{gathered} \pi\text{ = 3.14} \\ \text{Circumference = 2 }\times3.14\times2.1\text{ =13.188 inches} \end{gathered}[/tex]

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