Find the sum or difference.
- 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve by the substitution method.8x + 7y = -7 -6x - 4y = 4
A. (0, 0) B. (-1, 0) C. (-7, 4) D. (0, -1)
Mathematics
Find the distance between the planes.
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Mathematics
Write the decimal as a percent.1.4
A. 0.0014% B. 140% C. 0.14% D. 14%
Mathematics
Solve the compound inequality. Express the solution using interval notation or state that there is no solution.x + 3 ? 2 and x + 3 > -1
A. [-4, -1) B. (-4, -1] C. [2, 5) D. (2, 5]
Mathematics