Find the sum of the first n terms of the following arithmetic sequence.-66, 8, 82, . . .; n = 10
A. 3000
B. -3000
C. 2670
D. -3990
Answer: C
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Use the properties of parallel lines to solve the problem.If m 
n and m(?6) = 126°, what are the measures of the other angles?
A. m(?2) = m(?4) = m(?8) = 126°, m(?1) = m(?3) = m(?5) = m(?7) = 64° B. m(?5) = m(?7) = m(?8) = 126°, m(?1) = m(?2) = m(?3) = m(?4) = 54° C. m(?2) = m(?4) = m(?8) = 126°, m(?1) = m(?3) = m(?5) = m(?7) = 54° D. m(?2) = m(?4) = m(?8) = 126°, m(?1) = m(?3) = m(?5) = m(?7) = 36°
Provide an appropriate response.Is 
= 7?
Fill in the blank(s) with the appropriate word(s).
Use the given information to find the exact value of the trigonometric expression.sin ? = - 
; 
< ? < 2?
Find tan(2?).
A. - 
B. 
C. 
D. - 
Factor out the variable that is raised to the smaller exponent.x-6 - 7x-9
A. x-9(x-3 - 7) B. x-9(x3 + 7) C. x-9(x3 - 7) D. x-9(7x3)