Answer the following statement(s) true (T) or false (F)
Watson and Moritz (2002) found that middle school students were more successful with conditional probability tasks when asked for probabilities rather than frequencies.
Ans: False
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Find the length of the indicated portion of the curve.r(t) = (4cos t)i + (4sin t)j + 5tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Solve.A plane flies 460 miles with the wind and 300 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. 139 mph B. 104 mph C. 119 mph D. 114 mph
Multiply or divide as indicated. Make sure that your answer is reasonable by estimating first. 49.1 ÷ 7.56
A. 6.495 B. 0.649 C. 0.154 D. 64.947
Find the measure of each marked angle.
A. 60° and 120° B. 45° and 135° C. 90° and 270° D. 45° and 55°