Find the exact value under the given conditions.cos ? = 
, 0 < ? < 
; sin ? = - 
, - 
< ? < 0Find tan(? + ?).
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Write the augmented matrix for the system. Do not solve the system. 2x + 3y = 24 4x + 6y = 48
A. 
B. 
C. 
D. 
Mathematics
Approximate the number using a calculator. Round your answer to three decimal places.e-1.5
A. -4.077 B. -0.223 C. 0.523 D. 0.223
Mathematics
Write out the sum.
A. 7 + 72 + 73 + ... + 7n B. 72 + 73 + 74 + ... + 7n+1 C. 72 + 73 + 74 + ... + 7n D. 7 + 72 + 73 + ... + 7n+1
Mathematics
Find an expression for the nth term of the arithmetic sequence.
, 
, 
, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics