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Lelechka [254]
4 years ago
8

Solve for b A= \frac{a+b}{2}

Mathematics
1 answer:
lina2011 [118]4 years ago
6 0
A = (a+b)/2
2*A = 2*(a+b)/2 ... multiply both sides by 2
2A = a+b
2A-a = a+b-a ... subtract 'a' from both sides to isolate b
2A-a = b
b = 2A-a

Answer: b = 2A-a

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<h3>What is a ratio?</h3>

A ratio is a quantitative relation showing the comparison between two or more numbers. It can also be written in the fractional form where the first part is the numerator and the second part is called the denominator.

From the given information:

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We are being told that the longest side is the triangle is equal to 40.

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brainly.com/question/2328454

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