Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
x
=
13
3
x
=
13
3
Decimal Form:
x
=
4.
¯
3
x
=
Mixed Number Form:
x
=
4
1
3
The volume of a rectangular prism is found with the formula
V = w · l · h
So if you substitute those variables for the dimensions of the prism you get
V = 5 · 4 · 7
Then you simplify
V = 20 · 7
V = 140
Therefore, the volume of the prism is answer choice 1, 140 meters³
I believe the equation would be 765 -8t = 421. Then you would solve for t and get 43 seconds. I hope this helps!! :)
R=15
explain:
add the numbers in parentheses to get
45/3 = r
divide the numbers to get
15 = r
