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Eduardwww [97]
3 years ago
5

The length of a rectangle is 9 cm more then half the width. Find the length of the perimeter is 60cm

Mathematics
1 answer:
stira [4]3 years ago
7 0

length = 1/2 w+9

perimeter= 60 =2(l+w)  

substitute in for length

60 = 2(1/2 w +9 +w)  

60 = 2 (3/2 w +9)

distribute

60 = 3w + 18

subtract 18 from each side

42 = 3w

divide by 3 on each side

14 = w

length = 1/2 w + 9

length = 1/2 (14) +9

              7 + 9

16cm

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Step-by-step explanation:

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The first expression is

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The second expression is

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Learn how to simplify expressions:

brainly.com/question/7014769

brainly.com/question/11007572

brainly.com/question/11334714

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