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Oxana [17]
3 years ago
5

A. x+x+x+3x+3x=9 B. x+x+x+x+x=18 C. x+x+x+3x+3x=18 D. 9x^5=18

Mathematics
1 answer:
lisov135 [29]3 years ago
6 0

9514 1404 393

Answer:

  a)  C  x +x +x +3x +3x = 18

  b)  x = 2

  c)  2 cm, 6 cm

Step-by-step explanation:

a) The sum of the lengths of the sides is equal to the length of the perimeter. The appropriate equation is ...

 x +x +x +3x +3x = 18

__

b) Simplifying, the equation becomes ...

  9x = 18

  x = 2 . . . . . divide by 9

__

c) The shorter sides are x = 2 cm.

The longer sides are 3x = 6 cm.

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Read 2 more answers
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