Simplify the radical expression. Assume that all variables represent positive real numbers.
A. x9
B. x6
C. x6
D. x9
Answer: D
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Solve the problem.A cylinder is to be made so that its volume is equal to that of a sphere with a radius of 3 inches. If a cylinder is to have a height of 9 inches, find its radius.
A. 1.5 in.
B. 2
in.
C. 2 in.
D. 
in.
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + 4y2 = 4
A. 4 cos2 ? + sin2 ? = 4r B. cos2 ? + 4 sin2 ? = 4r C. r2(cos2 ? + 4 sin2 ?) = 4 D. r2(4 cos2 ? + sin2 ?) = 4
Expand the expression using the Binomial Theorem.(x5 + 2y)4
A. x20 + 8x15y + 24x10y2 + 32x5y3 + 16y4 B. x20 + 6x15y + 24x10y2 + 24x5y3 + 16y4 C. x9 + 8x8y +12x7y2 + 8x5y3 + 2y4 D. x9 + 6x8y + 24x7y2 + 24x5y3 + 16y4
Find the distance between P and Q.P(6, 2), Q(-7, -3)
A. 65
B. 
C. 8
D. 12