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July 31, 2015

Homework Help: Math help Ms. Sue please

Posted by Charlotte on Thursday, September 19, 2013 at 6:05pm.

1. What is the simplified form of the expression?

7m^2 + 6.5n - 4n + 2.5m^2 - n

9.5m^2 + 1.5n
4.5m^2 + 1.5n
1.5m^2 - 4.2n
9.5m^2 - 1.5n

2. What is the sum?

9/4 + (-1/5)

41/20
-41/20
-1/3
8/20

3. Order the following numbers from least to greatest.

√7, -2.3, √3, 5.1, -1/3

√7, -2.3, -1/3, √3, 5.1
-2.3, -1/3, √3, √7, 5.1
-2.3, -1/3, 5.1, √3, √7
√3, √7, -1/3, -2.3, 5.1

4. What sum or difference is equivalent to the expression?

3x - 2/9

1/3x-2/9
2/9x-1/3
1/9x
2/9

My answers:
1. 9.5m^2 + 1.5n
2. 41/20
3. -2.3, -1/3, √3, √7, 5.1
4. 1/9x

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