On a coordinate plane the vertices of a rectangle are (2,4), (2-1),(-5,-1),and (-5,4).what is the perimeter of the rectangle?

1 answer:

6 0

When plotted, there are 5 units in length when plotting and 7 units in width when plotting. This is equivalent to 24 units.

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The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation of 1.4. The distributio

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Answer:

Approximate probability that $\overline{X}$ is less than 2 = 0.1515

Step-by-step explanation:

Given -

Mean $(\nu )$ = 2.2

Standard deviation $(\sigma )$ = 1.4

Sample size ( n ) = 52

Let $\overline{X}$ be the mean of accidents per week at the intersection during one year (52 weeks) .

probability that $\overline{X}$ is less than 2 =

$P(\overline{X}< 2)$ = $P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}< \frac{2 - 2.2 }{\frac{1.4}{\sqrt{52}}})$ Putting $(Z =\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}})$