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elena55 [62]
1 year ago
13

Helpp pls fastttttttttttttttttttt

Mathematics
1 answer:
Aleksandr [31]1 year ago
6 0

Answer:

35 square inches

Step-by-step explanation:

S = ( 1/3 x 15 ) x ( 1/3 x 21 ) = 5x7= 35 square inches.

Hope this helps you.

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Answer:

The width of rectangle is W=\frac{108}{13}\ cm  or  8\frac{4}{13}\ cm

Step-by-step explanation:

we know that

The perimeter of rectangle is equal to

P=2(L+W)

where

L is the length of rectangle

W is the width of rectangle

we have

P=26/ cm\\L=(x+4)/ cm\\W=12x\ cm

substitute

26=2(x+4+12x)

solve for x

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26=26x+8

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x=\frac{18}{26}

simplify

x=\frac{9}{13}

Find the width of rectangle

W=12x\ cm

substitute the value of x

W=12(\frac{9}{13})=\frac{108}{13}\ cm

Convert to mixed number

\frac{108}{13}\ cm=\frac{104}{13}+\frac{4}{13}=8\frac{4}{13}\ cm

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