The number that should be added to both sides is 16 because its half of b, which is then squared. You then get (x+4)^2=20, which you then square root both sides and get x+4=+-20 and then subtract the 4 to get x=-4+-20

8 0

2 years ago

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Match the width with the go given area.

LekaFEV [45]

Hello!

<h2>Answer:</h2>

$\boxed{ \bf 1.~l~=~9.25~cm;~A~=~55.5~cm^2~matches~with~the~last~option~w~=~6~cm.}$

$\boxed{ \bf 2.~l~=~7.5~cm;~A~=~48.75~cm^2~matches~with~the~second~option~w~=~6.5~cm.}$

$\boxed{ \bf 3.~l~=~5~cm;~A~=~44~cm^2~matches~with~the~third~option~w~=~8.8~cm.}$

$\boxed{ \bf 4.~l~=~5~cm;~A~=~31.25~cm^2~matches~with~the~first~option~w~=~6.25~cm.}$

<h2>__________________________________</h2><h2>Explanation:</h2>

We already know that the formula for area of a rectangle is A = l × w.

Notice how the width and the length are being multiplied to find the area.

Well, to find the width, we must do the <em>opposite</em> of multiplication, which is division.

Since we already have the length, all we have to do is divide the area by the length for each of the questions.

A = l × w

55.5 = 9.25 × w

$\frac{55.5}{9.25}$ = 6

A = l × w

48.75 = 7.5 × w

$\frac{48.75}{7.5}$ = 6.5

A = l × w

44 = 5 × w

$\frac{44}{5}$ = 8.8

A = l × w

31.25 = 5 × w

$\frac{31.25}{5}$ = 6.25

8 0

2 years ago

Find the length of x

LUCKY_DIMON [66]

The length of x is 2.5

7 0

2 years ago

You plan to make a new fenced area in your back yard for your dog. The length of each side of the new dog area is

jekas [21]

Answer is 26 meters
Step by step
Perimeter is the measurement of all sides added together
3+3+3+4+6+7= 26

5 0

11 months ago

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