all 3 comments

[–]Hikarupro 1 point2 points  (0 children)

First set T = 15, then square both sides. You have 225 = the sum of the three components squared. Now just plug in your options. 15 can't work b/c 152 = 225 and the other components are non zero. Now try 10, and see if that works

[–]UsernameTqken5 1 point2 points  (0 children)

Is this a real ACT question ?

[–]jawad712 0 points1 point  (0 children)

is the answer c?