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

A

Step-by-step 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

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

you'll just earn points here

step-by-step explanation: