Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 7 cos ?

A. ?
B. ?
C. ?
D. 49?

Answer: C

Mathematics

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Solve the problem.For the pair of similar triangles, find the value of b.

A. 16 B. 12 C. 11 D. 4

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Graph the system of inequalities.2x - y > 4    x ? 4

A.

B.

C.

D.

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Use logarithmic differentiation to find the derivative of y.y = 

A.
B.
C.
D.  - tan x - 

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Find the LCM of the set of numbers.24, 18, 52

A. 1,248 B. 936 C. 312 D. 468

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