Use a sum-to-product identity to rewrite the expression.cos 
- cos 
A. -2sin 
sin 
B. -2sin 
cos 
C. -2cos 
sin 
D. -2cos 
cos 
Answer: A
Mathematics
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Use the table below to write the Mayan numeral as a Hindu-Arabic numeral.
A. 14 B. 10 C. 4 D. 19
Mathematics
Provide an appropriate response.Find the equation of the line that is parallel to the line 2x - y = 3 and passes through the point (5, 0). Write the equation in standard form.
A. 2x - y = -10 B. 2x - y = 10 C. -2x + y = 10 D. 2x + y = -10
Mathematics
Simplify the expression.
?
?
Write the answer without using negative exponents. Assume that all variables are restricted to those numbers for which the expression is defined.
?
A. 
B. ?
C. ?
D. ?
Mathematics
Provide an appropriate response.The number of solutions of the system 
is
A. zero. B. one. C. two. D. three. E. four.
Mathematics