On a math exam, Joel had a score o 90, which was exactly 2 standard deviations above the mean. The standard deviation for the test is 3.

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Q: Differentiate. y = 7+ x

A: Given Expression : y=x7+x y=x7+x-1 Differentiate by using Product Rule…

Q: W 4. A cell phone company claims that the average time a person spends on their phone is 12.8 hours…

A: Let μ denote the population mean and x⎯⎯ denotes the sample mean. Then, μ=12.8 and x⎯⎯=12.2 Let n be…

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Q: e. lim f(1) f. lim f(r) 2 g. lim f(1)

A: e) -1+ is greater than -1, so we will take the second piece of the function

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Q: 9. 2 14 6 -67.

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.