angelaisthebest1700
18.03.2021 •
Mathematics
Given the random variable described as A with mean = 80 and standard deviation = 12 , find the mean and standard deviation of the random variable 3X.
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Ответ:
Explanation is in the file
cutt.ly/tz3yDpb
Ответ:
Multiply each equation by the coefficient of y in the other one.
Step-by-step explanation:
(1) 6x + 5y = 2
(2) 4x + 2y = 8
Multiply each equation by the coefficient of y in the other one.
Multiply (1) by 2 and (2) by 5.
(3) 12x + 10y = 4
(4) 20 x + 10y = 40 Subtract (3) from (2)
8x = 36 Solve for x
x = 9/2