Solve the problem.Two pipes can fill a large tank in 10 hours. One of the pipes, used alone, takes 15 hours longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 25 hr for one
50 hr for the other
B. 10 hr for one
20 hr for the other
C. 12.5 hr for one
25 hr for the other
D. 15 hr for one
30 hr for the other
Answer: D
Mathematics
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Solve.A bag contains 8 red marbles, 6 blue marbles, and 5 green marbles. What is the probability of choosing a blue marble when one marble is drawn?
A. 
B. 
C. 
D. 
Mathematics
Find y: y3ú4 = 82
a. 3.655 b. 2.412 c. 3.448 d. 4.006 e. 5.155
Mathematics
Write the sentence as an equation. Use x to represent "a number."If ten times a number is decreased by 6, the result is 144.
A. 10x - 6 = 144 B. 6(10 - x) = 144 C. 10(x - 6) = 144 D. 6 - 10x = 144
Mathematics
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."81x - x5
A. x(x2 + 9)2 B. x(9 + x2)(3 - x)(3 + x) C. x(x2 - 9)2 D. prime
Mathematics