Solve.A crew team rows in a river with a current. When the team rows with the current, the boat travels 12 miles in 3 hours. Against the current, the team rows 6 miles in the same amount of time. At what speed does the team row in still water?
A. 4 mph
B. 5 mph
C. 1 mph
D. 3 mph
Answer: D
Mathematics
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Find an antiderivative of the given function.- 
A. 
B. 
C. 
D. - 
Mathematics
Solve the problem. Write the answer in lowest terms.Mrs. Montoya installed 
-inch roofing shingles on top of a 
-inch vapor barrier. What was the combined thickness of the two materials?
A. 
inch
B. 
inch
C. 
inch
D. 
inch
Mathematics
Solve the problem.The three angles in a triangle always add up to 180°. If one angle in a triangle is 72° and the second is 3 times the third, what are the three angles?
A. 72°, 80°, 28° B. 72°, 82°, 26° C. 72°, 79°, 29° D. 72°, 81°, 27°
Mathematics
Simplify the expression.c4c8c6
A. c18 B. c192 C. 3c18 D. 192c3
Mathematics