Find the unknown measure of the rectangle 9m perimeter=42 meters

1 answer:

4 0

12m; if one side is 9m then that means 42 - 9 - 9 would yield the size of the two remaining sides together. 42-18=24 24 divided between the two sides left means each remaining side had to be 12m

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Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC.

faust18 [17]

Answer:

$P(-2.06$

And we can find this probability with this difference:

$P(-2.06$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:

$X \sim N(0,1)$

Where $\mu=0$ and $\sigma=1$

We are interested on this probability

$P(-2.06$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(-2.06$

And we can find this probability with this difference:

$P(-2.06$

8 0

4 years ago

$54,000 was split at a ratio of 1:3:8 how much did each person get

yKpoI14uk [10]

The multiplier is 54,000 / (1+3+8) = 54,000 / 12 = $4500

so 1 person got 1* 4500 = $4500
another got 4500 * 3 = $13,500
another got 4500 * 8 = $36,000

5 0

4 years ago

What number is 30 percent of 200

marta [7]

Answer:

$x = 60$