Graph the pair of parametric equations with the aid of a graphing calculator.x = cos t + 4 cos 3t, y = 5 cos t - 4 sin 3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the indicated probability. Round your answer to 6 decimal places when necessary.An IRS auditor randomly selects 3 tax returns from 49 returns of which 6 contain errors. What is the probability that she selects none of those containing errors?
A. 0.6698 B. 0.0018 C. 0.6758 D. 0.0011
Mathematics
Add.12 + 67
A. 88 B. 79 C. 69 D. 77
Mathematics
Find an equation for the conic. If the conic is a parabola, assume that the vertex is at the origin. If the conic is an ellipse or hyperbola, assume that it is centered at the origin.Focus at (2, 0) and e = 
A. 
+ 
= 1
B. 
+ y2 = 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify the expression algebraically.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics