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15-04-2021
Mathematics

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The perimeter of a scalene triangle is 90 feet. The first side is three times the third minus six. The second side is twice the third plus three. How long is the third side?

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15-04-2021

Answer:

15.5

Step-by-step explanation:

3rd side =x

3x-6 +2x-3+x =90

6x-3 =90

6x =93

x= 15.5

3(15.5)-6=40.5

2(15.5)+3=34

40.5+34+15.5 =90

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