The world record for pole vaulting is 8.15 m. If the pole vaulter’s PE is 3942 J, what is his mass?

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

answer: graph 2

step-by-step explanation:

show us the triangle so we can answer it

2*2=3

two times two is four

i dont understand what you mean so pls comment