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3 years ago

Which ray is opposite CD?

Mathematics

2 answers:

icang [17]3 years ago

6 0

IT WOULD BE A AND B . RIGHT? . I THINK SO ..

ololo11 [35]3 years ago

5 0

Umm i think it would most likely to be D and C

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Plz help me need step by step explanation

Maslowich

Answer:

Step-by-step explanation:

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3 years ago

To measure the speed of a current, scientists place a paddle wheel in the stream and observe the rate at which it rotates. If th

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3 years ago

Certain transportation company has a fleet of 210 vehicles. The average age of the vehicles is 4.25 years, with a standard devia

-BARSIC- [3]

Answer:

$z = \frac{4-4.25}{\frac{1.5}{\sqrt{40}}}= -1.054$

And we can find the following probability:

$P(z$

And the last probability can be founded using the normal standard distribution or excel.

Step-by-step explanation:

For this case we define the random variable X as the ages of vehicles. We know the following info for this variable:

$\bar X = 4.25$ represent the mean

$\sigma =18/12=1.5$ represent the deviation in years

They select a sample size of n=40>30. And they want to find this probability:

$P(\bar X$

Since the sample size is large enough we can use the central limit theorem and the distribution for the sample mean would be:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

We can use the z score formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for 4 we got:

$z = \frac{4-4.25}{\frac{1.5}{\sqrt{40}}}= -1.054$

And we can find the following probability:

$P(z$

And the last probability can be founded using the normal standard distribution or excel.

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3 years ago

a tower casts a 450 ft shadow at the same time that a 4 ft child casts a 6 ft shadow. Write and solve a proportion to find the h

gavmur [86]

Check the picture below.

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3 years ago

A and b are two similar shapes the area of shape a is 200 what is the area of shape b shape a is shown a length 12cm shape b is

Nesterboy [21]

The area of shape b is 250

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3 years ago