A river flows in a roughly circular path around a hill. A surveyor measures the distance from P to Q to be 688 .The perpendicular distance from B to the midpoint of PQ, point A, is 86'. What is the radius of curvature of the river through this turn?
731'
Mathematics
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Use a reciprocal identity to find the indicated trigonometric function of ?.sin ? if csc ? = 
A. - 
B. 
C. 
D. - 
Mathematics
Divide and/or multiply as indicated. Simplify and leave the numerator and denominator in your answer in factored form.
÷ 
A. 
B. 
C. 21
D. 
Mathematics
Solve the problem.The average number of vehicles waiting in line at a toll booth of a super highway is modeled by the function 
, where x is a quantity between 0 and 1 known as the traffic intensity. To the nearest tenth, find the average number of vehicles waiting if the traffic intensity is 0.81.
A. 3.5 vehicles B. 8.5 vehicles C. 6.9 vehicles D. 1.6 vehicles
Mathematics
Solve the inequality
?
?
A. ?x ? -7 B. ?x ? -56 C. ?x ? -56 D. ?x ? -7 E. None of the above.
Mathematics