A squared plus B squared equals C squared, so what you need to do it square 5 and 7.
5 = 25
7 = 48
Then add then and square root your answer. 48 + 25 = 73. 73 square rooted equals an rounded amount of 8.6. SO the answer is D
3x-4y=10
-20-x+2y=10 then -30+2y=x now plug this in the other equation:
3(-30+2y)-4y=10
-90+6y-4y=10
2y=100
y=50
We know that
[volume of the ramp]=[area of the base]*height
area of the base=37.4 yd²
height=5 yd
so
[volume of the ramp]=[37.4]*5----> 187 yd³
the answer is
the volume of the ramp is 187 yd³
I believe its 130 points... im sorry if its wrong