Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What angle to the wind produces the maximum sailing speed? What is the speed to the nearest knot, of the sailboat sailing at 30° angle to the wind? 
A. 120°; 8 knots
B. 120°; 3 knots
C. 30°; 3 knots
D. 30°; 5 knots
Answer: B
Mathematics
You might also like to view...
Solve the problem.A Tasmanian lottery ticket consists of choosing 7 different numbers between (and including) 10 and 52. The number of possible lottery tickets is given by
A. 
B. 
C. 
D. 43 × 7
E. none of these
Mathematics
Evaluate the expression for the given values.(a + b)(a2 - ab - b2), if a = 6 and b = -5
A. 41 B. 31 C. 91 D. 451
Mathematics
The bar graph below shows the number of students by major in the College of Arts and Sciences. Answer the question.
About how many students are in the College of Arts and Sciences?
A. 1325 B. 1225 C. 1100 D. 1050
Mathematics
Graph the system of inequalities.x2 + y2 ? 815x + 4y ? 20
A. 
B. 
C. 
D. 
Mathematics