Solve the system by substitution.
A. (-1, 4)
B. (-1, -4)
C. (1, -4)
D. (1, 8)
Answer: C
Mathematics
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Add or subtract. Express the answer as a mixed number.12
+ 18
A. 29
B. 12
C. 30
D. 31
Mathematics
Solve the problem.If the average cost per unit C(x) to produce x units of plywood is given by C(x) = 
, what do 600 units cost?
A. $18,000.00 B. $180.00 C. $857.14 D. $899.95
Mathematics
Find the indicated matrix.Let A = 
, B = 
, and C = 
. Find C(A - B).
A. 
B. 
C. 
D. 
Mathematics
Find the unknown side of the right triangle. Use a calculator or square root table when necessary and round to the nearest thousandth.
A. 22.023 in. B. 485 in. C. 15.5 in. D. 242.5 in.
Mathematics