Perform the indicated operation. Where possible, reduce the answer to its lowest terms.
A. 8
B. 12
C. 15
D. 16
Answer: C
Mathematics
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Find the exact value of the product.cos 135° cos 45°
A. - 
B. 1
C. 
D. 2
Mathematics
Solve the system.x - y + z = -4x + y + z = -6x + y - z = 2
A. (-1, -4, -1) B. (-1, -1, -4) C. (-4, -1, -1) D. No solution
Mathematics
Convert the units using two or three unit fractions.6 wk = 
min
A. 60,480 B. 10,080 C. 43,200 D. 30,240
Mathematics
Solve the problem.Suppose you contribute 
per quarter into a fund that earns 
annual interest. What is the value of your investment after 14 years?
A. $21,803.90 B. $12,113.28 C. $9690.62 D. $15,747.26
Mathematics