Find the volume of the cone. Use ? ? 3.14.Find the volume of the cone shown. Round your answer to the nearest whole number.
A. V ? 615 in.3
B. V ? 117 in.3
C. V ? 821 in.3
D. V ? 410 in.3
Answer: D
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Solve by the method of elimination by substitution. x + 9y = 62-4x + 9y = 67
A. x = -1, y = 7 B. x = 1, y = 6 C. x = 0, y = 6 D. Inconsistent
In order to determine the effects of a new high carbohydrate diet intended to treat depression, a researcher conducts a study. Five hundred inmates in the Middletown prison are selected to participate in the study. The researcher puts the 400 inmates not in solitary confinement on the new diet. The 100 inmates in solitary confinement are given their regular meals. The 400 inmates on the new diet are not aware that they being studied or that their diet has been modified, but have many fewer reported cases of depression after 30 days.Which of the following is not true?
A. This is a clinical study. B. This is a controlled experiment. C. The control group consists of 100 inmates. D. This is a randomized controlled experiment. E. All of these statements are true.
Find the intersection.{a, b, c, d, e} ? {f, g, h, i, j}
A. {a, b, c, d, e} B. ? C. {e, f} D. {a, b, c, d, e, f, g, h, i, j}
Solve the system of equations by elimination.
A. (-3, 1) B. (1, -3) C. infinitely many solutions D. no solution