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3 years ago

On Monday, the temperature at 10 a.m. at Sam's house was -6° Fahrenheit. The temperature at 2 p.m. at Sam's house

Mathematics

1 answer:

Naily [24]3 years ago

6 0

Rose 8 Fahrenheit
I hope this help you !!!

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A section representing 20% of a circle graph has an angle measure of 20°.

gulaghasi [49]

We need five sections of 20% to get 100%.

So all we need to do is times 20 degrees by 5.

20 x 5 = 100

So your answer is 100 degrees.

Hope this helped. Have a great day!

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3 years ago

Read 2 more answers

Are they unique more than one or no triangle

Tanya [424]

The measures of the angles of a triangle add to 180.

45 + 45 + 90 = 180
The measures of these three angles do add to 180, ,so there is at least one triangle with these angle measures.
Using AA triangle similarity, any triangle with the same angle measures will be similar.

From the figure you already see two triangles with angles 45-45-90. There is an infinite number of triangles with those angle measures.

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3 years ago

Find the circumference of each circle

IrinaVladis [17]

Answer:28.26

Step-by-step explanation:9 x 3.14

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3 years ago

The average homicide rate for the cities and towns in a state is 10 per 100,000 population with a standard deviation of 2. If th

zlopas [31]

Answer:

$P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-10}{2})=P(Z>-1)$

And we can find this probability with the complement rule:

$P(Z>-1)=1-P(Z$

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 average homicide rate for the cities of a population, and for this case we know the distribution for X is given by:

$X \sim N(10,2)$

Where $\mu=10$ and $\sigma=2$

We are interested on this probability

$P(X>8)$

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:

$P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-10}{2})=P(Z>-1)$

And we can find this probability with the complement rule:

$P(Z>-1)=1-P(Z$

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3 years ago

Which weight more 2 pounds of bricks or 2 pounds of feathers?

Salsk061 [2.6K]

Two pounds is two pounds. It is a trick question making you focus more on the material, rather than the main point at hand. TWO pounds is TWO pounds, regardless of material.

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3 years ago