Answer:
a=5
Explanation:
Pythagorean theorem
+ =
substitute your values
- 12 - 12
= -
a = 169-144
a= 25
now find the square root of 25, which is 5
Answer: a=5
Step-by-step explanation: Use the pythagorean theorem and get
(a)^2+(12)^2=(13)^2
This would then be (a)^2+144=169
subtract 144 from both sides and get
(a)^2=25
Take the square root of both sides and you get a=5
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