Solve the problem.A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river. From point A, the conservation officer walks 95 feet downstream and sights point B on the opposite bank to determine that ? = 30° (see figure). How wide is the river? 
A. 110 ft
B. 47 ft
C. 55 ft
D. 165 ft
Answer: C
Mathematics
You might also like to view...
Solve.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 
moles per liter. (Round to the nearest tenth.)
A. 6.4 B. 7.3 C. 10.1 D. 8.5
Mathematics
Use an inverse matrix to find the solution to the system.
A. x = 5, y = 4, z = 7 B. x = -5, y = 10, z = 7 C. x = 5, y = 7, z = 4 D. x = -5, y = 7, z = 10
Mathematics
Solve the equation.g + 11.37 = 0
A. -11.37 B. 12.37 C. 11.37 D. -12.37
Mathematics
Find the unknown coordinate so that the ordered pair satisfies the given equation.y = 
x + 1, ( ? , 3)
A. 8
B. 
C. 4
D. 
Mathematics