Sketch the graph of the parametric equations. Then set up the appropriate integral to find the length of the curve and use a computer to evaluate it.x = 2 sin t, y = 2 cos t, 0 ? t ? 2?
A. L = 5?
B. L = 5?
C. L = 2?
D. L = 4?
Answer: D
Mathematics
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Solve.Suppose that y varies inversely as the square of x. If x is halved, what is the effect on y?
A. y is multiplied by 
B. y is multiplied by 4
C. y is multiplied by 
D. y is multiplied by 2
Mathematics
Answer the question.True or False: The graph of the equation x = 10 is a vertical line.
A. False B. True
Mathematics
Refer to the figure. 
Mathematics
Solve the problem.The amount of particulate matter left in solution during a filtering process is given by the equation 
, where n is the number of filtering steps. Find the amounts left for 
and 
. (Round to the nearest whole number.)
A. 1000, 31 B. 1000, 125 C. 1000, 8000 D. 2000, 125
Mathematics