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Please help me. I don’t know the answer to this problem

Please help me. I don’t know the answer to this problem-example-1
User JackCA
by
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1 Answer

4 votes

Answer:

12

Explanation:

Following the converse of the Pythagorean Theorem, you can say that b = 15*15 - 9*9 = sqrt(144)=12

User Compadre
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