Determine if the side lengths could be a right triangle.

1) not a right triangle

2) not a right triangle

3) Right triangle

4) Right triangle

Step-by-step explanation:

To determine if side lengths could be a right triangle

The formula is a^2 + b^2 = c^2

a=is the smallest number

b= the middle sized number

c= the largest number

1) 12,15,20

144+225= 400

Doesn't work so no

2)10,11,15

100+121= 225

Doesn't work so no

3)5,12,13

25+ 144 = 169

works so yes

4) 16,30,34

256 + 900 = 1,156

Works so yes!

y=13

Step-by-step explanation: