Perform the indicated operation and simplify if possible.
? (9x - 18)
A. 36
B. 9
C. 45
D. 5
Answer: C
Mathematics
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Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Find the infinite sum accurate to three decimal places.
A. -0.972 B. 0.972 C. 1.036 D. -1.036
Mathematics
Solve the problem.A water trough has a semicircular cross section with a radius of 0.25 m and a length of 5 m (see figure). How much work is required to pump water out of the trough when it is full? Round to two decimal places when appropriate.
A. 12,250 J B. 255.21 J C. 61,211.72? J D. 510.42 J
Mathematics
Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 2
B. 
C. 
D. 
x
Mathematics