Evaluate the trigonometric function with the given value of ? by finding a coterminal angle in [0, 2?). Do not use a calculator.Find cos ?, ? = 
A. 
B. - 
C. - 
D. 
Answer: B
Mathematics
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Provide an appropriate response.Multiply and reduce answers to lowest terms: 
× 
A. 
B. 
C. 
D. 
Mathematics
Find the volume of the solid of revolution obtained by revolving the region bounded by the graphs of the given functions about the x-axis.
?
and 
What will be an ideal response?
Mathematics
Determine if the equation is linear.
- 8 = 0
A. Linear B. Not linear
Mathematics
The radioactive substance neptunium-139 decays to 73.64% of its original amount after 24 hours. How long (to the nearest hour) would it take for 39% of the original neptunium to be present? ?
A. 83 hr B. 77 hr C. 39 hr D. 74 hr E. 68 hr
Mathematics