Solve the problem.A wheel with a 19-inch diameter is turning at the rate of 54 revolutions per minute. To the nearest inch, what is the speed of a point on the rim in in./min?
A. 3269 in./min
B. 3223 in./min
C. 3230 in./min
D. 3276 in./min
Answer: B
Mathematics
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Express as a sum of logarithms.log2(16 ? 4)
A. log162 + log42 B. log216 + log24 + log22 C. log216 + log24 D. log24 + log22
Mathematics
Solve the problem.A plane flies 450 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 24 mph, what is the speed of the plane in still air?
A. 182 mph B. 217 mph C. 197 mph D. 192 mph
Mathematics
Place the correct symbol, <, >, or =, in the blank between the expressions.27 
A. = B. < C. >
Mathematics
Find an equation of the parabola described.Focus at (0, 21); directrix the line y = -21
A. x2 = 84y B. y2 = 21x C. x2 = -84y D. y2 = 84x
Mathematics