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3 years ago

Melanie's bedroom floor has length equal to 6x + 5 and width equal to 9x -

Mathematics

1 answer:

fomenos3 years ago

5 0

Step-by-step explanation:

as we know floor is in the shape of rectangle or square area of rectangle or square is equal to product of the sides

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the basketball team won 6 games last year. this year they won 5 games. to the nearest percent, what is the percent change in the

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3 years ago

You have 42 ft. of fencing (1 ft. segments) to make a rectangular garden. How much should each side be to maximize your total ar

Verizon [17]

Answer:

$Length=10.5\ ft$

$Width=10.5\ ft$

$Area=110.25\ ft^{2}$

Step-by-step explanation:

Let

x----> the length of the rectangular garden

y---> the width of the rectangular garden

we know that

The perimeter of the rectangle is equal to

$P=2(x+y)$

we have

$P=42\ ft$

$42=2(x+y)$

simplify

$21=(x+y)$

$y=21-x$ ------> equation A

Remember that the area of rectangle is equal to

$A=xy$ ----> equation B

substitute equation A in equation B

$A=x(21-x)$

$A=21x-x^{2}$ ----> this is a vertical parabola open downward

The vertex is a maximum

The y-coordinate of the vertex is the maximum area

The x-coordinate of the vertex is the length side of the rectangle that maximize the area

using a graphing tool

The vertex is the point $(10.5,110.25)$

see the attached figure

$x=10.5\ ft$

Find the value of y

$y=21-10.5=10.5\ ft$

The garden is a square

the area is equal to

$A=(10.5)(10.5)=110.25\ ft^{2}$ ----> is equal to the y-coordinate of the vertex is correct

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3 years ago

Solve the following prisim

mr_godi [17]

Answer:

First find the area of the front triangle and then multiply it with 3

Step-by-step explanation:

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3 years ago

Factor the expression: 84x – 12x

liberstina [14]

Subtract 12x from 84x = 72x

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Write a variable expression for this amount a number x decreased by 6

ANEK [815]

I'm not exactly sure what you're asking but <em />I'll give it a go.
A = x -6

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