Find the least common denominator.
, 
A. r(r + 8)
B. r(r + 1)(r + 8)
C. (r + 8)2
D. r(r + 8)2
Answer: D
Mathematics
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Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Factor the polynomial completely.343p3 - 1
A. (7p - 1)(49p2 + 1) B. (7p + 1)(49p2 - 7p + 1) C. (343p - 1)(p2 + 7p + 1) D. (7p - 1)(49p2 + 7p + 1)
Mathematics
Solve.When sixteen is reduced by one-third of a number, the result is 11. Find the number.
A. 5 B. -15 C. 15 D. 18
Mathematics
Round the decimal to the given place value.-0.0235, nearest thousandth
A. -0.02 B. 0 C. -0.023 D. -0.0235
Mathematics