Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. 4
B. 
C. 4r3
D. 4r-3
Answer: C
Mathematics
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Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms.
A. 
= 
= 
B. 
= 
= 
C. 
= 
= 
Mathematics
Solve.Natasha rides her bike (at a constant speed) for 6 hours, helped by a wind of 2 miles per hour. Pedaling at the same rate, the trip back against the wind takes 10 hours. Find find the total round trip distance she traveled.
A. 30 miles B. 120 miles C. 60 miles D. 16 miles
Mathematics
Find the least common multiple of the denominators of the fractions.
, 
A. 8712 B. 2904 C. 4356 D. 792
Mathematics
Solve the problem.A lottery game has balls numbered 1 through 15. What is the probability of selecting an even numbered ball or a 9?
A. 
B. 
C. 
D. 
Mathematics