I believe so because if you were to work them out it would give you the same answer. the parentheses don't make the probably different since it doesn't have an exponent. so they are not needed
9) C.
10)A.
11) $75
Those are all the answers that you needed.
Answer:
x = 18
Step-by-step explanation:
5/6x = 15
Multiply each side by 6/5 to isolate x
6/5 * 5/6 x = 15 *6/5
x = 15/5 *6
x =3*6
x = 18
C is the answer . 81/3 = 27 and 54/2= 27
Answer:
2.5
Step-by-step explanation: