The answer is 80, 2x+3x+4x=180, so x=20. 20*4=80.
The answer would be 2 hope this helps
area = pi times radius squared
area = pi times 5 squared
area = pi times 25
area = 78.54
answer : 78.54 square feet
8/13 = 0.6153
y = cos-1(0.6153)
y = 52.0
I'm not totally sure if this is what you mean or if this is.
y = cos(8/13) = 0.9999 which to the nearest tenth is 1.0
Your just multiplying 7 and 10, so your answer is gonna be B.
