Complete the identity.tan2 2x + cos2 2x + sin2 2x = ?
A. sec2 2x
B. 2
C. sin2 2x
D. cos2 2x
Answer: A
Mathematics
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A system of nonlinear equations is given. Sketch the graph of the equation of the system and then determine the number of real solutions to the system. Do not solve the system.x2 + y2 = 252y + x = 5
A. Two
B. One
C. Two
D. Zero
Mathematics
Simplify the ratio.7.2 to 7.2
A. 
B. 1
C. 
D. 
Mathematics
Find the second derivative of the function.y = 
A. 2x - 
B. 2 + 
C. 1 + 
D. 2 - 
Mathematics
Suppose that the production function for a product is 
, where x represents the number of work hours per month and y is the number of available machines. Determine the marginal productivity of y.
A. 
B. 
C. 
D. 
E. 
Mathematics