Answer:
9)a. m = 7t + 9
7t = m - 9
t = (m - 9)/7
b. k = t/5 - m
t/5 = k + m
t = 5(k + m) = 5k + 5m
c. p = (h + t)/v
h + t = pv
t = pv - h
10)a. A = a² + bc
b. A = 6² + 3(4.5) = 36 + 13.5 = 49.5
c. a² = A - bc
a = √(A - bc)
d. a = √(80 - 8(2)) = √(80 - 16) = √64 = 8