Solve the problem.Candy and Delvis are riding bicycles in the same direction. Candy is traveling at the speed of 9 miles per hour, and Delvis is traveling at the speed of 6 miles per hour. In 3 hours what is the distance between them?
A. 18 miles
B. 6 miles
C. 10 miles
D. 9 miles
Answer: D
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Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the final expression.
A. -cos x B. -sin x C. sin x D. cos x
Decide whether the equation is "conditional," an "identity," or a "contradiction." Give its solution set.3x + 9(x + 1) + 4 = 13 - 2x
A. Identity; {all real numbers} B. Conditional; {0} C. Contradiction; ? D. Conditional; {1}
Translate the phrase into an arithmetic expression and calculate by hand.31 less than 51
A. 51 - 31 = 30 B. 51 - 31 = 15 C. 51 - 31 = 40 D. 51 - 31 = 20
Factor the special products, which are the sum or difference of two perfect cubes.125s3 + 27t3
A. (5s + 3t)(25s2 - 15st + 9t2) B. (5s + 3t)(25s2 + 15st + 9t2) C. (5s - 3t)(25s2 - 15st + 9t2) D. (6s + 3t)(25s2 + 9t2)