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4 years ago

Which measurement is equivalent to 21 yd??

Mathematics

1 answer:

Snezhnost [94]4 years ago

6 0

7 ft is correct
...................

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The perimeter of a rectangle is 40 inches. The table shows some of the possible dimensions for the length and area of the rectan

Mama L [17]

Answer:

Therefore the Dimensions are

Length =18 inches and Width = 2 inches

Length =2 inches and Width = 18 inches

Step-by-step explanation:

Let the Width of rectangle be 'W' inches.

The length of a rectangle be 'L' inches.

Area of rectangle given is 36 square inches.

Perimeter of Rectangle is 40 inches.

To Find:

Length = L = ?

Width = W = ?

Solution:

Perimeter of Rectangle is given as

$\textrm{Perimeter of Rectangle}=2\times (Length +Width)$

Substituting we get

$40=2(L+W)\\\\L+W=20\\\therefore L=20-W$

We have area of rectangle given as

$\textrm{Area of Rectangle}=Length\times Width)$

Substituting the given values we get

$36=(20-W)\times W\\W^{2}-20W+36=0$

Which is a Quadratic Equation, So by Splitting the middle term we get

$W^{2}-18W-2W+36=0\\W(W-18)-2(W-18)=0\\(W-2)(W-18)=0\\\therefore W=2\ inches\ or\ W =18\ inches$

Therefore the Length will be

$L=20-W=20-2=18\ inches\\OR\\L=20-18=2\ inches$

Therefore the Dimensions are

Length =18 inches and Width = 2 inches

Length =2 inches and Width = 18 inches

7 0

3 years ago

Type the integer that makes the following addition sentence true:<br> -5+? = -8

UkoKoshka [18]

The answer to this question is -3

8 0

3 years ago

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8k + 2m=3m +k solve for k

Veronika [31]

Answer: k= One- seventh of m.

Step-by-step explanation:

Given equation : 8k + 2m=3m +k ,where k and m are variables

To solve for k, Subtract 2m from both sides,we get

⇒8k+2m-2m=3m-2m+k

Simplify

⇒ 8k=m+k

Subtract k from both sides, we get

⇒ 8k-k=m+k-k

Simplify

⇒ 7k=m

Divide 7 from both the sides, we get

⇒ k=1/7m

⇒ k=one-seventh of m...........>here is the answer.

5 0

4 years ago

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Eliot needs to replace a window that is in the shape of a

IRINA_888 [86]

353.25

a=(3.14*15^2)/2

a=706.5/2

a=353 sq in

8 0

3 years ago

Me+You=? <br> wanna test our equation? ;3

Vika [28.1K]

Hahaha anyway thanks for the free point

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3 years ago

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