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snow_tiger [21]
3 years ago
11

If the standard deviation is 7.3kg, what is the variance?

Mathematics
1 answer:
sasho [114]3 years ago
6 0

Answer:

The variance is 53.29 kg²

Step-by-step explanation:

The standard deviation is the square root of the variance.

So

S(X) = \sqrt{V(X)}

In which problem, we have that:

S(X) = 7.3

So

\sqrt{V(X)} = 7.3

\sqrt{V(X)}^{2} = (7.3)^{2}

V(X) = 53.29

The variance is 53.29 kg²

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Answer:

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Step-by-step explanation:

(x − 3)(x − 5) = 35

FOIL

x^2 -5x-3x+15 = 35

Combine like terms

x^2 -8x+15 = 35

Subtract 35 from each side

x^2 -8x+15-35 = 35-35

x^2 -8x-20 =0

Factor

What 2 numbers multiply to -20 and add to -8

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Using the zero product property

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3 years ago
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Answer:

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They are the only numbers that could give the right answer.

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3 years ago
What is the effect on the graph of f(x) = x2 when it is transformed to h(x) = 2 x2 + 15?
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8 0
2 years ago
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Hockey to lacrosse would be 6 to 10 and simplified would be 3 to 5.

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