Answer:
x=0,-3
Step-by-step explanation:
x(x+3)(x+3)=0
Using the zero product property
x=0 x+3=0 x+3 =0
x=0 x=-3 x=-3
Answer:
3x=63
Step-by-step explanation:
3 coins means a coin is x and total expenditure is equal to 63
For number 2 it's would be 12.8
Sorry I don't have time for number 3
Ans: About 2.30
-15 x 3.16 / 9 = x sqrt
-15 x 3.16 = - 47.4
-47.4 / 9 = -5.27
-5.27 sqrt = About 2.30
Hope this helped :)
Answer:

Step-by-step explanation:
The formula of a volume of a rectangular prism:

l - length
w - width
h - height
We have

Substitute:
