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3 years ago

9

8x+9=2x+21 what is the value of x in the equation?

1 answer:

garri49 [273]3 years ago

5 0

X=2. Hope this helps :)

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The length of a rectangle is twice its width. Find its area, if its perimeter is 7 1/3 cm The area of the rectangle is _sq. cm.

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Answer:

The area of rectangle is $2\frac{80}{81}\ cm^2$

Step-by-step explanation:

we know that

The perimeter of a rectangle is equal to

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so

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Remember that

The length of a rectangle is twice its width.

so

$L=2W$ ----> equation B

substitute equation B in equation A

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solve for W

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Find the value of L

$L=2(\frac{11}{9})$

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<em>Find the area of rectangle</em>

$A=LW$

substitute the values

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$A=\frac{242}{81}\ cm^2$

Convert to mixed number

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