Answer:
5x-10=20
5x=20-10
x=10:5
x=2
x = 6.
Step-by-step explanation:
5x - 10 = 20
5x - 10 + 10 = 20 + 10
5x = 30
5x/5 = 30/5
9
a^3=72900/100
a=(729)^1/3
a=9
Answer: I think it’s C.
sorry if it’s wrong❣️.