Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 5 cos 3?
A. 
?
B. 
?
C. 
?
D. 
?
Answer: C
Mathematics
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Solve the problem.A certain radioactive isotope decays at a rate of 0.1% annually. Determine the half-life of this isotope, to the nearest year.
A. 301 yr B. 7 yr C. 693 yr D. 500 yr
Mathematics
Provide an appropriate response.Consider the graphs of y = cos-1 x and y = sin-1 x. Does it make sense that the derivatives of these functions are opposites? Explain.
What will be an ideal response?
Mathematics
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Mathematics
Solve the problem.A woman has $2.55 in dimes and nickels. She has 18 more dimes than nickels. How many nickels does she have?
A. 7 B. 5 C. 28 D. 23
Mathematics