3 years ago

Which of the following choices is the standard deviation of the sample shown

Mathematics

1 answer:

frozen [14]3 years ago

7 0

Answer:

Mean = (19 + 20 + 21 + 22 + 23)/5 = 105/5 = 21

x x - mean (x - mean)^2

19 -2 4

20 -1 1

21 0 0

22 1 1

23 2 4

Sum = 10

Step-by-step explanation:

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Determine whether f(x)=5x+1/x and g(x)= x/5x+1 are inverse functions. Explain how you know.

vladimir1956 [14]

A property of inverse functions is that if f(x) = a, g(a) = x

F(x) = (5x+1)/x
G(x) = x/(5x+1)

Plug in x = 3.
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G(16/3) = 16/83. Since it doesn’t equal 3, it’s not an inverse function

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Step-by-step explanation:

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2 years ago

find the point on the terminal side of θ = negative three pi divided by four that has an x coordinate of negative 1

Mila [183]

Check the picture below, is a negative angle, thus, is going "clockwise"

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-1\cdot \cfrac{-1}{-1}=y\implies -1$