This is simple algebra :)
First, we can write the question as an algebraic equation.
Given that Doug spent 40 more hours than Laura, we can represent Laura as (x) and Doug as (x+40).
"Doug and Laura spent a combined 250 hours." So we can write this as
(x) + (x+40) = 250
Now simplify:
2x + 40 = 250
Solve x by subtracting 40 from both sides of the equation:
2x = 210
Therefore:
x = 210/2
= 105
So Laura (x) spent 105 hours!
You pretty much just flip the second fraction and factor
Answer:
x^7/2187.
Step-by-step explanation:
9x^7/27^=
9x^7/19683 =
x^7/2187 =
x^7/2187.
The answer is C. 65........
Answer:I think one is x
Step-by-step explanation:
