Solve.Two recording devices are set 3200 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 200 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation?
A. 1587.45 feet
B. 1176.3 feet
C. 428.57 feet
D. 6148.17 feet
Answer: C
You might also like to view...
Use the Ratio Test to determine if the series converges or diverges.
A. Diverges B. Converges
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.cos2 2x - sec2 2x = 0
A. {45°, 135°, 225°, 315°} B. {0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°} C. {0°, 90°, 180°, 270°} D. {0°, 180°}
Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
? y = x2 y = 
A. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 2, f(x) is not differentiable at 
B. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 
, f(x) is not differentiable at 
D. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 2, f(x) is differentiable at 