Question

Can someone explain to me how to do this? i’m so confused

Answer 1

Proportion box
3 over 1 is equal to m over 5
So it’s 1m= 15
And then you divide so it’s 1/m=15/1
And it equals to 15

Answer 2

I think it’s going to be 7! Because since the other triangle is 1 and 3 it’s just 2 more so I just added to more to 5 getting me 7!! I think lol