Use a product-to-sum identity to rewrite the expression.sin 
cos 
A. 0.5
B. 0.5
C. 0.5
D. 0.5
Answer: C
Mathematics
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Solve the problem by integration.Under specified conditions, the time t (in min) required to form x grams of a substance during a chemical reaction is given by 
Find the equation relating t and x if x = 0 g when 
A. t = 
ln 
+ 
ln 
B. t = 
ln 
- 
ln 4
C. t = 
ln 
- 
ln 
D. t = 
ln 
+ 
ln 4
Mathematics
Refer to the figure and provide an appropriate name for the indicated angles. 
?2 and ?7
A. Alternate exterior angles B. Corresponding angles C. Complementary Angles D. Alternate interior angles
Mathematics
Rewrite as a radical expression and simplify if possible. Assume all variables represent nonnegative real numbers.(-8)1/3
A. 2 B. -8 C. -2 D. Not a real number
Mathematics
Solve the equation.-3x + 4(-2x - 7) = -31 - 8x
A. 1
B. 
C. 
D. -1
Mathematics