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2 years ago

Answ please brainleites

Mathematics

1 answer:

almond37 [142]2 years ago

8 0

Answer:

1 1/2

Step-by-step explanation:

Not trying to be mean or anything, but you are an idiot. The answer is the one with ONE DOT, hinting at the question, "...ordered once?"

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Solve for f. show your work! 12=f-13-2

tankabanditka [31]

12=f-13-2
12=f-15
f=27

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2 years ago

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A rectangle has a width of 2cm and a perimeter of 25cm. Find the length and the area .

Gwar [14]

2w + 2l = 25

2 * 2 + 2l = 25

Simplfiy.

4 + 2l = 25

Subtract 4 from both sides.

2l = 21

Divide both sides by 2.

l = 10.5

Now that we have the value of l, we can find the area.

A = lw

A = 10.5 * 2

A = 21.

The length is 10.5cm.

The area of the rectangle is 21cm^2

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2 years ago

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2 years ago

A rectangle has a length that is 9 feet less than four times its width. Its area is 90 square feet

kramer

Answer:

The length of rectangle is $15\ ft$

The width of rectangle is $6\ ft$

Step-by-step explanation:

Let

x-----> the length of rectangle

y----> the width of rectangle

we know that

The area of rectangle is equal to

$A=xy$

$A=90\ ft^{2}$

$90=xy$ -----> equation A

$x=4y-9$ -----> equation B

substitute equation B in equation A and solve for y

$90=(4y-9)y$

$4y^{2}-9y-90=0$

using a graphing calculator

The solution is

$y=6\ ft$

Find the value of x

$x=4y-9$ -----> $x=4(6)-9=15\ ft$

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2 years ago

*BRAIN TEASER*

Mademuasel [1]

Answer:

idk but go dtep by step

Step-by-step explanation:

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