Use a graphing calculator to determine which of the following expressions asserts an identity.2 sin 
cos 
= ...
A. sin 
B. cos 
C. cos 
D. cos ?
Answer: A
Mathematics
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Write as a percent.0.00403
A. 0.000403% B. 0.0403% C. 0.403% D. 0.2015%
Mathematics
Solve the systems of equations using the addition method.
A. (5, 1) B. (1, 5) C. All ordered pairs along 2x - y = 9 D. No solution
Mathematics
Write the percent as a decimal.0.7%
A. 0.007 B. 0.008 C. 0.07 D. 0.7
Mathematics
Match the given equation with one of the graphs.x2 = 6y
A. 
B. 
C. 
D. 
Mathematics