Find the arc length of the given curve.x = t2, y = 
t3/2, z = t; 0 ? t ? 9
A. 4.5
B. 9
C. 90
D. 81
Answer: C
Mathematics
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Calculate.168
- 8.71
A. 159.79 B. 177.21 C. 164.145 D. 1467.635
Mathematics
Find the probability.The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency table below summarizes the results.
If a customer is selected at random, what is the probability that the waiting time is at least 12 minutes or between 8 and 15 minutes? Round your answer to three decimal places.
A. 0.091 B. 0.731 C. 0.509 D. 0.6
Mathematics
Rewrite the polynomial in descending order. Identify the leading term, the leading coefficient, and the degree of the polynomial.-x - 3x2 - 4x3 - 3x5 + 4
A. -x, -1, 1 B. -3x5, -3, 5 C. 3x5, 3, 5 D. -3x5, -3, 3
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics