Find the exact value of the expression. Do not use a calculator.tan 
- cos 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate the improper integral.
A. 12
B. 1
C. 
D. 
Mathematics
Find an equation of variation for the given situation.y varies jointly as x and p and inversely as the square of s, and 
when 
and
A. y = 
B. y = 13xps2
C. y = 
D. y = 
Mathematics
If the given sequence is a geometric sequence, find the common ratio.
, 
, 
, 
, 
A. 2
B. 9
C. 
D. 
Mathematics
Find the value of the expression using the given values.-4x + yx = -5, y = 3
A. -2 B. -17 C. -1 D. 23
Mathematics