Solve the problem.Find the volume V of a sphere of diameter 4 m. Use 3.14 for ?. If necessary, round the result to the nearest tenth.
A. V = 18.8 m3
B. V = 33.5 m3
C. V = 16.7 m3
D. V = 267.9 m3
Answer: B
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Evaluate.
A. 40,320 B. 336 C. 6720 D. 8064
Decide whether the statement is true or false. If it is false, tell why.If k is a positive integer, then x2 = k will have one rational and one irrational solution.
A. True B. False; there will be either two rational solutions or two irrational solutions. C. False; there will always be two rational solutions.
Identify the type of surface represented by the given equation. y2 + z2 = 10
A.
| Paraboloid |
B.
| Cylinder |
C.
| Ellipsoid |
D.
| Parabolic cylinder |
Solve the problem.The function h(t) = -16t2 + 160t - 336 gives the height h, in feet, of a flare fired from the bottom of a gorge 336 feet deep with an initial velocity of 160 ft/sec. The flare fired is visible only when it is above the rim. During what interval can the flare be seen?
A. 6 < t < 10 B. 3 < t < 7 C. 9 < t < 13 D. 0 < t < 3