The following is a list of the ages of employees at Hammer's Inc. Find the mean and the sample standard deviation of the ages of the employees. Round noninteger results to the nearest tenth.
a. mean: 48.3
standart deviation: 15
b. mean: 362.3
standart deviation: 112.7
c. mean: 40.3
standart deviation: 12.5
d. mean: 28.2
standart deviation: 8.8
e. mean: 30.2
standart deviation: 9.4
c. mean: 40.3
standart deviation: 12.5
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Solve the problem.Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 52 feet from point A and 67 feet from point B. The angle ACB is 52°. How far apart are points A and B?
A. 53.9 ft B. 71 ft C. 96.6 ft D. 107.2 ft
Find the quadratic function whose graph contains the given points.
, 
, 
A. f(x) = 5x2 - 5x + 4 B. f(x) = -5x2 + 5x + 4 C. f(x) = 5x2 + 5x - 4 D. f(x) = 5x2 + 5x + 4
Find all saddle points for the matrix game.
A. Entry a12 and entry a23 B. Entry a12 C. Entry a23 D. No saddle points
Solve the equation using the zero-product property.2x2 = -15x - 25
A. {-5, -10}
B. 
C. 
D. 