Simplify.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Decide whether or not the given equation is an identity.cos(90° - x) = sin x
A. Yes B. No
Mathematics
Find a so that the statement is true.
A. 3 B. 5 C. 0 D. 6 E. 2
Mathematics
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 5x + 4y = 86x - 3y = 33
A. (-3, 4) B. (3, -4) C. (-4, 3) D. (4, -3)
Mathematics
Write the rational number as a decimal and state whether the decimal is repeating or terminating.- 
A. -1.2 terminating
B. -1.
repeating
C. -1.1
repeating
D. -1.
repeating
Mathematics