Factor completely. If the polynomial is prime, state so.9 - 25x2
A. (3 - 5x)2
B. (3 + 5x)2
C. (3 + 5x)(3 - 5x)
D. prime
Answer: C
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Solve the problem.Frustum of a cone
A small cone has been removed from the top of the original cone. What is the ratio of the volume of the original cone to the volume of the small cone which was removed, given that the radius of the original cone is twice the radius of the small cone?[Hint: Use similar triangles]
A. 4 : 1 B. 8 : 3 C. 8 : 1 D. 2 : 1
Stock prices on consecutive days for a stock are shown. Find the increase (decrease) in the price of each stock as a number and the percent increase (decrease) rounded to the nearest tenth of a percent.42.19, 41.31
A. 0.88; 2.1% B. -0.88; (2.1%) C. -0.88; 2.1% D. 0.88; (2.1%)
Identify the rate, base, and portion. What percent of 19 is 8?
A. rate (%) = 8% base (of) = 19 portion (is) = unknown number B. rate (%) = 8% base (of) = unknown number portion (is) = 19 C. rate (%) = unknown number base (of) = 19 portion (is) = 8 D. rate (%) = unknown number base (of) = 8 portion (is) = 19%
Multiply and, if possible, simplify.
? 
A. 12xy
B. 12xy
C. 3y
D. 3xy