Factor completely. If the polynomial cannot be factored, write "prime."x4 - 81
A. (x + 3)2(x - 3)2
B. (x2 + 9)(x2 - 9)
C. (x2 - 9)(x - 3)(x + 3)
D. (x2 + 9)(x - 3)(x + 3)
Answer: D
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The following table shows the stopping distance D, in feet, for a car that is traveling at a speed of S miles per hour. S 25 35 40 60 75 D 84 138 163 308 432? Use power regression to answer the following question. If the speed increases by 19%, how is the stopping distance affected? Round your answer to two decimal places. ?
A. Stopping distance increases by 28.58%. B. Stopping distance increases by 29.59%. C. Stopping distance increases by 31.38%. D. Stopping distance increases by 26.95%.
A die is rolled twice. Write the indicated event in set notation.The sum of the rolls is 13.
A. ? B. {(6, 7), (7, 6)} C. {(7, 6)} D. {(6, 7)}
For the resistor shown below, find the resistance and the tolerance, written as a percent.
A. 71 ? , ±20% B. 43 ? , ±10% C. 41000000 ? , ±10% D. 71 ? , ±10% E. 41 ? , ±10%
A jeweler has three small solid spheres made of gold, of radius 1 mm, 2 mm, and 3 mm. He decides to melt these down and make just one sphere out of them. What will the radius of this larger sphere be? Round the answer to one decimal place.
What will be an ideal response?