Find all solutions of the following equation algebraically.
a. 
b. 
c. 
d. 
e. 
d.
Mathematics
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Find dy/dx without eliminating the parameter.x = 4 cos t, y = 6 cos(2t)
A. 6 sin t
B. 6 sin t cos t
C. 
D. 6 cos t
Mathematics
Solve the problem.The table shows enrollment in 2-year technical schools for 1980, 1990 and 2000. Assuming a linear relationship, estimate the enrollment for 1995.
A. 3.2 million B. 1.5 million C. 4.9 million D. 2.3 million
Mathematics
Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. cannot be simplified
B. 
C. 
D. 
Mathematics
Solve the problem.A circular pond is being installed in the corner of a yard, as shown. The installer needs to know the value of x in feet. Find x to the nearest tenth of a foot. 
?a = 39 ft
A. 1.1 ft B. 1.8 ft C. 1.4 ft D. 2 ft
Mathematics