Using the Law of Cosines, find Angle B if a = 7, b = 8 and c = 3.
What will be an ideal response?
98.21ø
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Solve the problem.The amount of Jen's monthly phone bill is normally distributed with a mean of $72 and a standard deviation of $9. What percentage of her phone bills are between $72 and $81?
A. 47.5% B. 34% C. 68% D. 95%
Write the series using summation notation.1 + 
+ 
+ 
+ 
A. 
B. 
C. 
D. 
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. 1241.22 ft B. 1788.85 ft C. 425 ft D. 7375.64 ft
For the given rational functions f(x) and g(x), f(x) + g(x).f(x) = 
, g(x) = 
A. 
B. 
C. 
D. 