Question

Please help me! Easy question! Please help!

Which side lengths form a right triangle?
Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
9
,
12
,
15
9,12,159, comma, 12, comma, 15

(Choice B)
B
2
,
6
,
38
2,6,
38
​
2, comma, 6, comma, square root of, 38, end square root

Answer 1

I am pretty sure that it's C

Explanation:

you need to do a^2+b^2=c^2

Answer 2

A

Explanation:

Use a^2 + b^2 = c^2 in each case.

A.

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225 True

Right triangle

B.

2^2 + 6^2 = (sqrt(38))^2

4 + 36 = 38

40 = 38 False

No right triangle

C.

3^2 + 9^2 = (sqrt(91))^2

9 + 81 = 91

90 = 91 False

No right triangle