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Brilliant_brown [7]
3 years ago
10

Can someone help me? I'm terrible at math lol

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Following Pythagorean Theorom, we know a^2 + b^2 = c^2. We know b and c.  a^2 + 5^2 = 13^2.

a^2 + 25 = 169

a^2 = 144

a = √144

a = 12

So, the answer is 12, which means we pick D

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