Solve the problem.Points A and B are on opposite sides of a lake. Point C is 80.7 meters from A. The measure of angle BAC is 72°20', and the measure of angle ACB is determined to be 35°50'. Find the distance between points A and B (to the nearest meter).
A. 48 m
B. 50 m
C. 25 m
D. 23 m
Answer: B
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = xyi + 6j + 2xk; C: r(t) = cos 5ti + sin 5tj + tk, 0 ? t ? 
A. W = 
B. W = 
C. W = 0
D. W = 
Mathematics
Multiply by using the rule for the square of a binomial.
2
A. 25x2 - 
x + 
B. 25x2 - 2x - 
C. 25x2 - 2x + 
D. 25x2 - 
Mathematics
Use a graphing utility to obtain the plane curve represented by the given parametric equations.Cycloid: x = 3(t - sin t), y= 3(1 - cos t), 0 ? t ? 6?
A. 
B. 
C. 
D. 
Mathematics
Write the expression in lowest terms.
A. m B. -(m + 3) C. -m D. m + 3
Mathematics