Perform the division.
A. r2 - 4
B. r + 4
C. r2 + 4
D. r - 4
Answer: D
Mathematics
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Find the limit using 
= 1.
A. 4/5 B. 5/4 C. 0 D. Does not exist
Mathematics
Write the equation in standard form of the line satisfying the given conditions.Through (3, -8); undefined slope
A. y = -8 B. y = 3 C. x = -8 D. x = 3
Mathematics
Use Cramer's rule to solve the system. 3x - 2y + 2z - w = 2 4x + y + z + 6w = 8-3x + 2y - 2z + w = 5 5x + 3z - 2w = 1
A. 
B. 
C. 
D. Can't use Cramer's rule, D = 0
Mathematics
Graph the curve whose parametric equations are given.x = 9 sin t, y = 9 cos t; 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics