Find the exact value of the trigonometric function. Do not use a calculator or tables.sin 
A. 
B. - 
C. 
D. - 
Answer: B
Mathematics
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Graph.9x2 + 49y2 = 441
A. 
B. 
C. 
D. 
Mathematics
Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = 5ti + 5tj + 7t2k, 0 ? t ? 1; ?(x, y, z) = 
A. 
B. 
C. 
D. 
Mathematics
Simplify.
A. 7x
B. 
C. 
D. 7
Mathematics
Solve the problem.A triangular lake-front lot has a perimeter of 1500 feet. One side is 400 feet longer than the shortest side, while the third side is 500 feet longer than the shortest side. Find the lengths of all three sides.
A. 100 ft, 200 ft, 300 ft B. 300 ft, 700 ft, 800 ft C. 300 ft, 300 ft, 300 ft D. 200 ft, 600 ft, 700 ft
Mathematics