1. Simplify the expression. Show your work.
22 + (32 – 42)

22 + (32 - 42) = 22 + (-10) = 22 - 10 = 12

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Asked 5/5/2015 2:04:15 PM

Updated 6/6/2015 12:39:07 PM

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What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9
A. (3, 9)
B. (–27, –9)
C. (–3, –6)
D. (–9, –9) **Weegy:**
3x – 4y = 9
–3x + 2y = 9
(3x – 4y = 9) + (–3x + 2y = 9);
-2y = 18;
y = 18/-2;
y = -9;
3x – 4(-9) = 9;
3x + 36 = 9;
3x = 9 - 36;
3x = -27;
x = -27/3;
x = -9;
The solution set is (–9, –9).
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Updated 5/2/2015 4:51:03 AM

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11. Solve the inequality. Show your work.
|r + 3| 7
**Weegy:** |r + 3| = 7; r = 4 or r = -10 r + 3 = 7; r = 7 - 3; r = 4; -(r + 3) = 7; -r - 3 = 7; -r = 7 + 3; -r = 10; r = -10 (More)

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Updated 5/1/2015 11:01:05 PM

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4. Simplify the expression.
-3(b – 7)
**Weegy:** -3(b - 7) = -3b + 21 (More)

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Updated 6/6/2015 12:41:47 PM

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3. Simplify the expression.
9xy2 – 11xy2
**Weegy:** 9xy^2 - 11xy^2 = -2xy^2. (More)

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Updated 6/6/2015 12:42:23 PM

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17. Solve the equation. Show your work.
8x – 12 = 4x + 24
**Weegy:** 8x + 12 = 4x + 24; 8x - 4x = 24 - 12; 4x = 12; x = 12/4; x = 3 (More)

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Updated 5/1/2015 11:09:39 PM

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