The total number of hours, in units of 100 hours, that a family runs a vacuum cleaner over a period of one year is a random variable X having the density function shown to the right. Find the variance of X. f(x) = (3) 9 (x-4), 4

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A: Greenhouse gas emission level in 2020 = 56440 MTCDE

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A: (c)Given

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Q: Please answer the other questions here (#2 and #3). Please confirm the answers. Thank you.

A: 1st answer is correct, given in the tutor solution. Because here (cosh y) is constant.  3rd option…

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A: 3940, 4060, 3220, 3080, 2920, 3870, 4060, 4030, 3790Arrange in ascending order2920, 3080, 3220,…

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Q: AX, = -2 3. 2. 2. 2. 3.

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A: Topic:-  matrix algebra

Q: Number 24, please.

A: detailed solution is given below

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A: perimeter = ?

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A: d)   average marginal cost c(x)¯'=marginal cost/x here x=cases of premium multiuse copy paper…

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A: Given a 1211220021112347451112 b 1202231110240000

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Q: where is number 6?

A: Given data :  Desk arranged in 4 rows and 4 columns Probability  of success (p) = 4/16= 1/4 = 0.25…

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A: Since this is a multiple subpart question according to the Bartleby Answering rule, only first three…