7. 13x − 5y + 2y
SOLUTION: Get Ready for Chapter 10
Find each square root. If necessary, round to
the nearest hundredth.
1. 8. (10a − 5b) + (6a + 5b)
SOLUTION: SOLUTION: 9. 6m + 5n + 4 − 3m − 2n + 6
SOLUTION: 2. SOLUTION: 10. x + y − 3x − 4y + 2x − 8y
SOLUTION: 3. SOLUTION: Solve each equation.
2
11. 2x − 4x = 0
4. SOLUTION: 5. SANDBOX Isaac is making a square sandbox with
an area of 100 square feet. How long is a side of the
sandbox?
SOLUTION: The solutions are 0 and 2.
SOLUTION: 2
12. 6x − 5x − 4 = 0
SOLUTION: The length of a side cannot be negative. So, each
side of the sandbox is 10 feet long.
Simplify each expression.
6. (21x + 15y) − (9x − 4y)
The solutions are
and .
SOLUTION: 2
13. x − 7x + 10 = 0
SOLUTION: 7. 13x − 5y + 2y
SOLUTION: The solutions are 2 and 5.
2
14. 2x + 7x − 5 = −1
8. (10a − 5b) + (6a + 5b)
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SOLUTION: SOLUTION: Page 1
Get Ready for Chapter 10
The solutions are 2 and 5.
2
14. 2x + 7x − 5 = −1
SOLUTION: The solutions are –4 and
.
15. GEOMETRY The area of the rectangle is 90
square feet. Find x.
SOLUTION: The dimensions of the rectangle cannot be negative.
So, x = 10.
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