The function f(x) = -(x-3)² + 9 can be used to represent the area of a rectangle with a perimeter of 12 units, as a
function of the length of the rectangle, x. What is the maximum area of the rectangle?
O3 square units
O 6 square units
O9 square units
O 12 square units

Answers

Answer 1
6 Square units i believe you divide
Answer 2

The maximum area of the rectangle is A = 9 units²

What is the Area of a Rectangle?

The area of the rectangle is given by the product of the length of the rectangle and the width of the rectangle

Area of Rectangle = Length x Width

Given data ,

Let the function for area be f ( x )

where f ( x ) = - ( x - 3 )² + 9

Let the width of the rectangle be W.

The perimeter of a rectangle is given by:

Perimeter = 2(length + width) = 12 units

12 = 2(x + width)

Simplifying this equation, we get:

6 = x + width

width = 6 - x

Now, the area of the rectangle is given by:

Area = Length x Width

Substituting the value of width in terms of x, we get:

Area = x(6 - x)

Area of rectangle A = 6x - x²

This is a quadratic function of x, which has a maximum value at the vertex of the parabola. The vertex of the parabola can be found by completing the square or by using the formula:

x = -b/(2a)

In this case, a = -1 and b = 6, so we have:

x = -6/(2(-1)) = 3

Therefore, the maximum area of the rectangle occurs when x = 3, and the value of the maximum area is:

Area of rectangle A = 3(6 - 3) = 9 square units

Hence , area of rectangle is A = 9 units²

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Related Questions

What is 6 ÷ 2(1+2)= I really need to know

Answers

Answer:9

Step-by-step explanation: 1+2 is 3 then 6 divided by 2 is 3 then it would be 3 times 3 which equals 9 I think.

Answer:

The answer to your problem is, 9

Step-by-step explanation:

First split up the problem which is

6 ÷ 2

&

1 + 2

6 ÷ 2 =

3.

1 + 2 =

3.

Since there are no equations such as + - / x that means it will be a multiplication problem.

3 x 3 =

9. Which is our answer

Thus the answer to your problem is, 9

Select ALL the correct answers.

Chris is taking a trip to a certain town and wants to know what the residents of the town think about the restaurants there. It would not be possible to ask all 500 residents, so Chris plans on surveying a random sample of 50 residents in the population.

Select the survey methods that would result in Chris obtaining a random sample.

Surveying the first 25 women and 25 men he met at a grocery store.
Surveying every 10th woman and every 10th man at a local diner.
Surveying every 10th woman and every 10th man from a list of people living in the town.
Surveying one person from every 10th home in the town.
Surveying the first 50 people he saw at the airport as he got off the plane.

Answers

Chris can obtain a random sample of 50 residents by surveying the first 25 women and 25 men at a grocery store, surveying every 10th woman and every 10th man from a list of people living in the town, surveying one person from every 10th home in the town, or surveying the first 50 people he saw at the airport as he got off the plane.

Random sampling is an important method used to obtain a representative sample of the population of interest. Random sampling involves selecting a sample of elements from a population in such a way that each element has an equal probability of being selected. This ensures that the sample is not biased in any way and that it is representative of the population.In order to obtain a random sample, Chris could use a variety of methods. He could survey the first 25 women and 25 men he met at a grocery store, survey every 10th woman and every 10th man from a list of people living in the town, survey one person from every 10th home in the town, or survey the first 50 people he saw at the airport as he got off the plane.Each of these methods would result in a sample of 50 people that is randomly selected from the population of 500 residents. This would ensure that the sample is representative of the population and that the results of the survey are not biased in any way. Furthermore, the sample size of 50 is large enough to be considered representative of the population of 500.

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Pls help!!
Write and solve the problem. Type your answer into the answer box. -2 2/3 + 1 4/5

Answers

Answer: If i did it right it should be -0.866

Step-by-step explanation:

A coordinate grid showing Number of T-Shirts on the horizontal x-axis and Total Cost in dollars on the vertical y-axis with 2 lines. The first line is labeled Shirt Box and posses through (0, 30) and the point at (4, 60). The second line is labeled Just Tees and passes through (0, 0) and the point at (6, 63).
The volleyball team at West View High School is comparing T-shirt companies where they can purchase their practice shirts. The graph represents the two companies’ prices. What is the linear equation that represents each T-shirt company?
Shirt Box:
Just Tees:

Answers

Answer:

shirt box : y=7.5x + 30

just tee: y= 10.5x

Step-by-step explanation:

just got right on edge 2020

Answer:

D on the first one and B on the second.

Step-by-step explanation:

The cost of one t-shirt is 128. How much will be the cost of 20

Answers

The cost of 20 T-Shirt will be 2560 when cost of one t-shirt is 128.

When a selling price and profit are provided, cost price equals selling price plus profit. When the selling price and loss are disclosed, cost price equals selling price plus loss.

Profit is calculated as S.P. - C.P. If the selling price is less than the cost price, the difference between the two is the loss incurred. Loss is also equal to C.P. - S.P.

We must divide the gross profit by the entire revenue for the year, multiply by 100, and then find the gross profit margin. We must divide net income (or net profit) by the entire annual revenue before multiplying the result by 100 to get the net profit margin.

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Simplify the expression.
6nx + 7p - 14p + 2nx - 6x
A. 8nx - 7p - 6x
B. 4nx + 21p-X
C. -13nx – 16p + 8x
D. -8nx + 28p - 4x
I need help!

Answers

Answer: 8nx−7p−6x

Step-by-step explanation:

Select the correct inequality to make a true statement

Select the correct inequality to make a true statement

Answers

Step-by-step explanation:

\( \frac{1}{4} \boxed{?} \frac{3}{8} \\ \\ \frac{1}{4} = \frac{2}{8} \\ \\ \because \: 2 < 3 \\ \therefore \: \frac{1}{4} \boxed{ < } \frac{3}{8} \)

Evaluate the expression for h = 6 and j = 5.
hj - h² =
Submit

Evaluate the expression for h = 6 and j = 5.hj - h =Submit

Answers

Therefore, when h = 6 and j = 5, the value of hj - h² is -6.

What are arithmetic operations:

Arithmetic operations are basic mathematical operations that involve manipulating numbers to perform calculations. There are four main arithmetic operations:

Addition: Adding two or more numbers together. The symbol used to represent addition is "+", and the result is called the sum.

Subtraction: Subtracting one number from another. The symbol used to represent subtraction is "-", and the result is called the difference.

Multiplication: Multiplying two or more numbers together. The symbol used to represent multiplication is "×" or "*", and the result is called the product.

Division: Dividing one number by another. The symbol used to represent division is "÷" or "/", and the result is called the quotient.

These operations can be combined to perform more complex calculations. Additionally, there are other arithmetic operations, such as exponentiation (raising a number to a power) and finding roots, which involve using arithmetic principles.

by the question.

To evaluate the expression hj - h² for h = 6 and j = 5, we simply substitute these values into the expression and perform the arithmetic operations:

hj - h² = (6)(5) - 6²

= 30 - 36

= -6

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What is the value of x in 2.5-0.35x=-3

Answers

Answer:

X= 110/7 or 15.7 or rounded to 16

Answer:

x=15.714285

Step-by-step explanation:

-0.35x=-3-2.5

-0.35x=-5.5

-0.35/-0.35= -5.5/0.35

X=-5.5/-0.35

X=15.714285



What is the allusion:
"I don't know if this store carries shoes in your size, Sasquatch," my dad joked when we went shopping for another new pair of shoes, my second pair in two
months.
Shoes
Dad
Sasquatch
Two Months

Answers

The allusion in this statement is "Sasquatch," referencing a legendary creature known for its large size and used humorously to imply the person's abnormally large shoe size.

The allusion in the given statement is "Sasquatch." Sasquatch, also known as Bigfoot, is a legendary creature often depicted as a large, hairy, and elusive humanoid. In this context, the reference to Sasquatch is used metaphorically to humorously imply that the person's shoe size is abnormally large.

The mention of Sasquatch adds a playful and exaggerated tone to the conversation about shopping for shoes. It serves as a lighthearted way for the dad to comment on the frequency of buying new shoes, suggesting that the person's feet grow rapidly or that they have a high shoe consumption rate.

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What is the most logical first step in solving the equation x^2 + 6x + 9 = 10?

A. Take the square root of both sides of the equation

B. Subtract 10 from both sides of the equation

C. Factor the left side of the equation

D. Subtract 9 from both sides of the equation

What is the most logical first step in solving the equation x^2 + 6x + 9 = 10? A. Take the square root

Answers

Answer is B. Subtract 10 from both sides of the equation

1st step for solving X is Moving all terms to the left of the equation and simplifying

Subtract 10 from both sides of the equation
x^2 + 6x - 1 = 0

Find the points on the curve y = 2x3 + 3x2 − 12x + 3 where the tangent line is horizontal.

Answers

the tangent is only horizontal at the critical points of the equation, so

\(y=2x^3+3x^2-12x+3\implies \cfrac{dy}{dx}=6x^2+6x-12\implies \cfrac{dy}{dx}=6(x^2+x-2) \\\\\\ \stackrel{\textit{setting the derivative to 0}}{0=6(x^2+x-2)}\implies 0=x^2+x-2 \\\\\\ 0=(x+2)(x-1)\implies \boxed{x= \begin{cases} -2\\ 1 \end{cases}} \\\\[-0.35em] ~\dotfill\\\\ y=2(-2)^3+3(-2)^2-12(-2)+3\implies y=-16+12+24+3\implies \boxed{y=23} \\\\\\ y=2(1)^3+3(1)^2-12(1)+3\implies y=2+3-12+3\implies \boxed{y=-4} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \text{\LARGE (-2~~,~~23)\qquad (1~~,~~-4)}~\hfill\)

Bella, Tia, and Ron participate in a trivia contest at a book shop. Tia scores 4 points, Ron scores 3 points, and Bella scores 2 points. Each player gets a number of paperback books equal to the square of the points he or she scores. What is the total number of books the players receive?


42 × 32 × 22

42 + 32 + 22


24 × 23 × 22


24 + 23 + 22

Answers

Answer:

4(2 on top) + 3(2 on top) + 2(2 on top)

Step-by-step explanation:

Gareth 30 students in a class and the ratio of boys to girls in the class is 2:3 calculate the number of goals

Answers

Answer:

There are 12 boys and 18 girls

Step-by-step explanation:

Equations

There are 30 students in a class. Let's call:

x = number of boys

Since the sum of boys and girls is 30:

30 - x = number of girls

The ratio of boys to girls is 2:3, thus:

\(\displaystyle \frac{x}{30-x}=\frac{2}{3}\)

Crossing denominators:

3x = 2(30 - x)

Operating the parentheses:

3x = 60 - 2x

Adding 2x:

5x = 60

Dividing by 5:

x = 60/5 = 12

x = 12

There are 12 boys and 30-12=18 girls

A type of wood has a density of 250 kg/m3. How many kilograms is 75,000 cm3 of the wood? Give your answer as a decimal.

Answers

D=250kg/m3
V=75000cm3=0,075m3
Kg=?
D=m*v
m=d/v
m=250/0.075=3333,33kg

In ΔFGH, the measure of ∠H=90°, the measure of ∠G=85°, and GH = 4.5 feet. Find the length of FG to the nearest tenth of a foot.

Answers

Answer:

hope this helps !

your answer should be FG-220.2 feet

Step-by-step explanation:

The base of the triangle is FH

The perpendicular of the triangle GH=57 feet

The hypotenuse of the triangle is FG

We know that

sin∠F=Perpendicular/Hypotenuse

Hypotenuse= Perpendicular/sin∠F

Hypotenuse= 57/sin∠15

Hypotenuse=220.23109

Round of to nearest tenth

Hypotenuse=220.2 feet

How to use Pascal’s triangle to find x^2 using the difference quotient formula

Answers

Using Pascal's triangle and the difference quotient formula, we expand (x + h)^2 and simplify the expression to (2hx + h^2) / h. As h approaches 0, the term h becomes negligible, and we are left with 2x, which represents the derivative of x^2.

To use Pascal's triangle to find x^2 using the difference quotient formula, we can follow these steps:

1. Write the second row of Pascal's triangle: 1, 1.

2. Use the coefficients in the row as the binomial coefficients for (x + h)^2. In this case, we have (1x + 1h)^2.

3. Expand (x + h)^2 using the binomial theorem: x^2 + 2hx + h^2.

4. Apply the difference quotient formula: f(x + h) - f(x) / h.

5. Substitute the expanded expression into the formula: [(x + h)^2 - x^2] / h.

6. Simplify the numerator: (x^2 + 2hx + h^2 - x^2) / h.

7. Cancel out the x^2 terms in the numerator: (2hx + h^2) / h.

8. Divide both terms in the numerator by h: 2x + h.

9. As h approaches 0, the term h becomes negligible, and we are left with the derivative of x^2, which is 2x.

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The stem and leaf plot shows the number of items in each of the 12 collections in a museum.

Answers

According to the 1.5 outlier rule, there are two outliers.

What are the outliers?

An outlier is a number that is way smaller or way larger than that of other numbers in a data set.

The 1.5 rule for large outliers is :

Q3 - (1.5 x IQR)

Where:

Q3 = third quartile IQR = interquartile range

IQR = 13 - 6 = 7

13 + (1.5 x 7) = 23.50

Outliers are numbers that are greater than 23.50. These are 26 and 39.

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The stem and leaf plot shows the number of items in each of the 12 collections in a museum.

You have $16 to buy apples for an apple crisp recipe. Apples cost $2 each. Write and solve an inequality that represents the numbers of apples you can buy.

Answers

The inequality to buy an apple can be given as 2x ≤ 16

The number of apples we can buy is 8

What is an inequality?

An inequality is a relation that compares two numbers or other mathematical expressions in an unequal way. The most frequent application is to size-compare two numbers on a number line.

We are given that we have only$16 dollar to buy apples and each costs $2

Let the number of apples we can buy be x

Hence the inequality can be given as

2x ≤ 16

Now dividing both sides by 2 we get,

x ≤ 8

Hence we can buy at most 8 apples

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Giselle created a scale drawing of the school cafeteria in art class. In the scale drawing, the length of the cafeteria is 11 inches. The length of the actual cafeteria is 88 feet. What scale did Giselle use to create the scale drawing of the school cafeteria? 1 inch : ______ feet

Answers

11 inches on the scale drawing represents 88 feet of the actual cafeteria.

What is length?

Length is a physical measurement of the size of an object, from one end to the other. It is one of the most common physical measurements used in everyday life. Length is measured in a variety of units, including meters, feet, inches, and centimeters. It is important to note that length does not measure the width, depth, or height of an object, which are all different measurements. Length is used to describe the distance between two points, such as the length of a road or the distance between two cities.

Giselle used a scale of 1 inch : 8 feet. This means that for every inch on the scale drawing, it represents 8 feet of the actual cafeteria. Therefore, 11 inches on the scale drawing represents 88 feet of the actual cafeteria.

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The graph and table each show a proportional relationship between the number of miles traveled and the
advertised number of gallons of gas used for the two car models, A and B, respectively. Based on the
graph and table, car A can travel how many times the distance car B can travel when both cars use
1 gallon of gas? Write your answer as a decimal.
Enter your answer in the box
1.25

Answers

To answer this question, we need to compare the ratios of miles traveled to gallons of gas used for car A and car B when they both use 1 gallon of gas.

For car A, we can see from the graph that 50 miles are traveled for every 2 gallons of gas used, or in other words, 25 miles are traveled for every 1 gallon of gas used. Therefore, car A can travel 25 times the distance for 1 gallon of gas.

For car B, we can see from the table that 40 miles are traveled for every 2 gallons of gas used, or in other words, 20 miles are traveled for every 1 gallon of gas used. Therefore, car B can travel 20 times the distance for 1 gallon of gas.

To compare the two ratios, we can divide the ratio of miles traveled to gallons of gas used for car A by the ratio for car B:

25/20 = 1.25

Therefore, car A can travel 1.25 times the distance car B can travel when both cars use 1 gallon of gas.

Sea level is measured over a 20 year period. The graph shows the number of years since the study began and the corresponding change in sea level.
Which statement best describes the rate of change for the situation?
A. The height of the water increases 0.3 cm per year.
B. The height of the water increases 1.5 cm per year.
C. The height of the water increases 2 cm per year.
D. The height of the water increases 6 cm per year.

Answers

Answer:

The Answer is A. The height of the water increases 0.3cm per year. I Just took the Quiz and And got it correct

Step-by-step explanation:

Answer:

0.3

Step-by-step explanation:

Tomas makes a photobook online and sends copies to 4 family members. There is a $6 shipping charge for each photobook. He pays a total of $112.

Which equation can be used to find the price, x, of one photobook?

4x + 6 = 112
4(x + 6) = 112
42 - 6 = 112
4(x – 6) = 112

Answers

Answer 4(x+6)=112



4x+6=112 would only pay shipping for 1 book
4(x-6)=112 is taking away money
42-6=112 maybe this means 4x-6=112 but that would still be wrong

Answer:

4(x + 6 )= 112

Tomas makes a photobook online and sends copies to 4 family members. There is a $6 shipping charge for

How to Split 2 loaves of bread equally between 7 people

Answers

Answer:

I would divide each loaf into 4 pieces, which gives eight. There would be one piece left over.

Step-by-step explanation:

A landscaping company charges $48 per cubic yard of mulch plus a delivery charge of $28. Find a linear function which computes the total cost C (in dollars) to deliver x cubic yards of mulch.

Answers

The linear function for the total cost C is:

\(\text{C} = 28 + 48\text{x}\)

What is a function?

A function is an expression, rule, or law that defines a relationship between one variable.

Example:

\(f(\text{x}) = 2\text{x} + 1\)

\(f(1) = 2 + 1 = 3\)

\(f(2) = 2 \times 2 + 1 = 4 + 1 = 5\)

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

Charge per cubic yard = $48Delivery charge = $28

The total cost for x cubic yards.

\(\bold{C = 28 + 48x}\)

Thus, the function is C = 28 + 48x.

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Look at image please help me ASAP

Look at image please help me ASAP

Answers

Answer:

3a/b^8

Step-by-step explanation:

Answer:

you have to copy and paste it onto google

Step-by-step explanation:

Which equation does not belong? Explain your reasoning 2x + y = 4 y = -2x + 4 f(x) = -2x + 4 2x + 2y = 4

Answers

Answer:

2x + 2y = 4  does not belong

Step-by-step explanation:

2x + y = 4     → y = -2x + 4

y = -2x + 4    → y = -2x + 4

f(x) = -2x + 4 → y = -2x + 4

2x + 2y = 4   → y = -x + 2

Alamo Cola manufactures a soft drink made with 0.25% peach juice concentrate. What is this percent expressed as a fraction
A. 1/4 and 0.25
B. 1/4 and 0.0025
C.1/40 and 0.025
D. 1/400 and 0.0025​

Answers

Answer:

A

Step-by-step explanation:0.25 is a quarter so 1/4 is also a quarter so you juts add the subcalculus and you get the sum

what is linuer equation​

Answers

Answer:

an equation between two variables that gives a straight line when plotted on a graph.

Step-by-step explanation:

The population of a city decreases by 1.2% per year. If this year's population is 177,000, what will next year's population be, to the nearest individual?

Answers

Answer:

Initial value

177000

Final value

174,876

Decrease

1.2%

Difference

-2,124

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