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svp [43]
3 years ago
7

Pls help me on this !!!

Mathematics
1 answer:
alexira [117]3 years ago
4 0

Answer:

9

Step-by-step explanation:

To solve this question you need the formula of hypothenuse theorem, I personally use a^{2} + b^{2} = c^{2}.

Since c^{2} is the hypothenuse, and the hypothenuse in this case is 15, the equation will be 12^{2}+ b^{2} = 15^{2}.

144+b^{2}=225

subtract 144 from both sides

b^{2}= 81

\sqrt{b^{} } = \sqrt{81}

b=9

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