Solve the equation.
+ 
= 
A. -4
B. 8
C. -8
D. 4
Answer: C
Mathematics
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Solve the equation by using the quadratic formula.
= 
+ 
A. 
B. 
C. 
D. 
Mathematics
Determine all solutions of the equation in radians.Find cos 
, given that sin ? = 
and ? terminates in 0 < ? < 90°.
A. 
B. 
C. 
D. 
Mathematics
Determine if the given value is a solution to the equation.y - 9 = 6; 15
A. solution B. not a solution
Mathematics
Simplify the ratio.
A. 
B. 
C. 
D. 
Mathematics