Find the least common multiple.20, 44
A. 220
B. 44
C. 64
D. 880
Answer: A
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Apply the distributive property.(x + y - 2)(-7xy)
A. 7x2y - 7xy2 +14xy B. -7x2y + 7xy2 +14xy C. -7x2y - 7xy2 +14x2y2 D. -7x2y - 7xy2 +14xy
Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 240 sin (45?t)What is the period and amplitude of the current?
A. period = 
second, amplitude = 45
B. period = 
second, amplitude = 240
C. period = 45? seconds, amplitude = 
D. period = 
second, amplitude = 270
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
Find the foci of the given hyperbola.25x2 - y2 = 25
A. (0, 
), (0, -
)
B. (5, 0), (-5, 0)
C. (
, 0), (-
, 0)
D. (0, 5), (0, -5)