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3 years ago

Help with this question please

Mathematics

2 answers:

trasher [3.6K]3 years ago

8 0

Answer:

A; x< 5

Step-by-step explanation:

A simple way to remember the difference between greater than or less than is picturing the symbol as an alligator, the mouth of the alligator, the open end, eats the bigger number. The line under the greater than/ less than symbol means "or equal to". An open circle on a number line means that it's NOT "or equal to", so the answer isn't B or D. On the number line, it shows what x could equal. The arrow falls on 0, I'll use 0 as an example. Is 0 less than 5? Yes. If x could equal 0, that means that x is less than 5.

AVprozaik [17]3 years ago

5 0

X is less than 5.
Because the circle is not closed, there’s no equal to.
Because it’s going to the left, it’s less.

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x = (2, 7, 6, 10, 9, 13, 11, 18)

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$S_{XY}=\frac{\sum_{i=1}^{n}(X_{i}-\bar{X})(Y_{i}-\bar{Y})}{n-1}$

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$Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }$

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c. Using above formula we get,

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