Factor the sum or difference of two cubes.729y3 + 343

A. (9y + 7)(81y2 - 63y + 49)
B. (9y - 7)(81y2 + 63y + 49)
C. (729y - 7)(y2 + 63y + 49)
D. (9y + 7)(81y2 + 63y + 49)


Answer: A

Mathematics

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A. 13 B. -2 C. 0 D. 10

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Solve the problem.If m?x = 38° in the following figure, find the measures of ?w, ?y, and ?z. 

A. m?z = 38°, m?w = m?y = 52° B. m?z = 52°, m?w = m?y = 142° C. m?z = 142°, m?w = m?y = 38° D. m?z = 38°, m?w = m?y = 142°

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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = , ? < ? < Find cos(2?).

A.
B. - 
C.
D. - 

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Use the leading-term test to match the function with the correct graph.f(x) = - x3 - 2x2 + 3x + 49

A.

B.

C.

D.

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