Answer 1 I am pretty sure
Answer:
or 
Step-by-step explanation:
we know that
The surface area of a cube is equal to

where
x is the length side of a cube
In this problem we have

substitute in the formula and solve for x


square root both sides

The price of the sofa will be $490
he saved $210 :)
Answer:
Need more info
Step-by-step explanation:
Answer:
Subtracting −7n+2 from 2n−1 is 9n - 3.
Step-by-step explanation:
As the expression given in the question be as follow.
−7n+2 and 2n - 1 .
Subtracted −7n+2 from 2n - 1 .
= 2n - 1 - (-7n + 2)
Open the bracket
= 2n - 1 + 7n - 2
Simplify the above
= 9n - 3
Therefore Subtracting −7n+2 from 2n−1 is 9n - 3.