2 years ago

E

Mathematics

2 answers:

dybincka [34]2 years ago

7 0

Answer:

A. 21, 16, 28

Step-by-step explanation:

1st side = x

2nd side = x-5

3rd side = x+7

x+x-5+x+7 = 65

3x + 7 - 5 = 65

3x + 2 = 65

3x = 65-2

3x = 63

63/3 = 21

x = 21

therefore, the sides are 21, 16, and 28

kotykmax [81]2 years ago

6 0

Answer:

The answer is A.

Step-by-step explanation:

Basically as it says, the first length is 5 more than the second and the third is 7 more than the first.

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