Find the length of the curve.x = cos 2t, y = sin 2t, 0 ? t ? 2?
A. 6?
B. 2?
C. ?
D. 4?
Answer: D
Mathematics
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Complete the table.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive.
? 
A. -343
B. 7
C. 7
D. -7
Mathematics
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Mathematics
Divide.4 ÷ 0.05
A. 0.8 B. 80 C. 0.08 D. 8
Mathematics