Work the chain multiplication.11 ? 81 ? 2

A. 1682
B. 1882
C. 1772
D. 1782

Answer: D

Mathematics

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A. 2
B.
C.
D.

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The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).y2 = 16x

A. sin2 ? = 16r2 cos ? B. r sin2 ? = 16 cos ? C. r2 sin2 ? = 16 cos ? D. sin2 ? = 16r cos ?

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Use a graphing calculator to solve the nonlinear system. Give x- and y-coordinates to the nearest hundredth.x2 + y2 = 13.85x = 3y - 1

A. {(3.42, 1.47), (-3.62, -0.87)} B. {(-3.41, -1.47), (3.62, 0.87)} C. {(-11.26, -3.42), (11.06, 4.02)} D. {(1.47, 3.42), (-0.87, -3.62)}

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Write an expression for the total area of the figure(s) shown.

A. a2 + 2ab B. 2a2 + ab + 2b2  C. a2 + 2ab + b2  D. a2 + b2 

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Mathematics