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18 May, 15:48

The perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7.

Which lengths make sense for possible values of b?

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  1. 18 May, 16:08
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    a=7.85-1/2^b

    Step-by-step explanation:

    2a=15.7-b Move variable to the right side and change its sign

    2a=15.7-b Divide both sides of the equation by 2

    a=7.85-1/2^b The final solution for a is
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