Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.2x3y5 + 4x2y5 - 16xy5
A. y5(2x2 + 4x)(x - 4)
B. 2xy5(x - 2)(x + 4)
C. prime
D. 2xy5(x + 2)(x - 4)
Answer: B
Mathematics
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Solve.A cruise boat travels at its top speed 48 miles downstream in 4 hours and returns to its starting point upstream, also at its top speed, in 6 hours. Find the speed of the stream.
A. 22 mph B. 12 mph C. 10 mph D. 2 mph
Mathematics
Evaluate the exponential expression.121
A. 121 B. undefined C. 1 D. 12
Mathematics
Graph the equation and give the coordinates of the vertex.y = x2 - 2x + 8 
A. (1, -9)
B. (-1, 7)
C. (-1, 9)
D. (1, 7)
Mathematics
Write the set by listing its elements.{a|a is a counting-number multiple of 4}
A. {4, 8, 12, 16, . . .} B. {. . . , -8, -4, 0, 4, 8, . . .} C. {4, 8, 12, 16} D. {0, 4, 8, 12, 16, . . .}
Mathematics