Solve the problem.Two recording devices are set 3600 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. 1788.85 feet
B. 7375.64 feet
C. 1241.22 feet
D. 425 feet
Answer: D
Mathematics
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Provide an appropriate response.A company collects data about the number of years that an employee has worked at the company and the amount of sales (in thousands of dollars) that the employee brings in annually. The best-fit line for the data is found to be Sales = 3.53(Years Employed) + 37.92. Determine the residual if the number of years an employee has worked at the company is 2 and the employee brings in $31 thousand in sales.
A. 75.98 B. 44.98 C. -145.35 D. -13.98
Mathematics
Solve the equation.6d2 + 21d + 18 = 0
A. 
B. 
C. 
D. 
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 48y(y + 2)
Mathematics
Solve the equation.2(x + 2) - 2 = 4x - 2(x + 7 ÷ 1.1)
A. (-?, ?) B. ? C. {-16} D. {12}
Mathematics