A Student says, "My answer must be wrong--my answer got bigger." Which of the following responses will best help the student understand why the answer got bigger?
Ans: Ask the to explain the meaning of 8 ÷ 2, using cutting ribbon as a context, and then ask her to re-explain to you using 8 ÷ 1/2, still using cutting ribbon as a context.
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Determine the angle between u and v. Give the angle in degrees rounded to the nearest tenth of a degree.u = -i + 6j, v = 3i - 4j
A. 64.3° B. 152.6° C. 62.6° D. 0.9°
Find all points where the function is discontinuous.
A. None B. x = -2, x = 0, x = 2 C. x = 0 D. x = -2, x = 2
Solve the problem.While traveling at a constant speed in a car, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 20 feet per second per second (ft/sec2) when the radius of the turn is 60 feet, find the acceleration the passengers feel when the radius of the turn is 240 feet.
A. 5 ft/sec2 B. 6 ft/sec2 C. 8 ft/sec2 D. 7 ft/sec2
Use the fundamental identities to simplify the expression.sin2? + tan2? + cos2?
A. cos3? B. sin ? C. tan2? D. sec2?