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KIM [24]
3 years ago
13

What is the measure of each exterior angle of a regular polygon with 12 sides?

Mathematics
1 answer:
Vadim26 [7]3 years ago
8 0
A polygon<span> has as many interior </span>angles<span> as sides. An equilateral triangle has three equal 60 </span>degree angles<span>. The </span>sum<span> of the </span>angles<span> of this and any triangle is </span>180 degrees<span>.The </span>sum<span> of the four interior </span>angles<span> of a square is 360 </span>degrees<span>, which is the same for any quadrilateral.</span>
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Good strategy for using slope formula
Fantom [35]
I personally use y2-y1 over x2-x1 because it's simple.  Plot two y values and two x values.  The first ones you plotted are x1 and y1, the others are x2 y2.  Now subtract y2-y1 and x2-x1.  Afterwards, divide the y value by the x value, that will give you slope.
3 0
3 years ago
Suppose that a manager is interested in estimating the average amount of money customers spend in her store. After sampling 36 t
musickatia [10]

Answer:

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The 90% confidence interval for this case would be (38.01, 44.29) and is given.

The best interpretation for this case would be: We are 90% confident that the true average is between $ 38.01 and $ 44.29 .

And the best option would be:

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

Step-by-step explanation:

Assuming this complete question: Which statement gives a valid interpretation of the interval?

The store manager is 90% confident that the average amount spent by the 36 sampled customers is between S38.01 and $44.29.

There is a 90% chance that the mean amount spent by all customers is between S38.01 and $44.29.

There is a 90% chance that a randomly selected customer will spend between S38.01 and $44.29.

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The 90% confidence interval for this case would be (38.01, 44.29) and is given.

The best interpretation for this case would be: We are 90% confident that the true average is between $ 38.01 and $ 44.29 .

And the best option would be:

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

8 0
3 years ago
A car is purchased for $24,000 . After each year, the resale value decreases by 20% . What will the resale value be after 5 year
aliya0001 [1]

Answer:0

The can will have no value after 5 years

Step-by-step explanation:

If it lost 20% value in the first year after 5 year is amount to 100% devalued making it worth nothing at the fifth year.

20/100*24000=$4,800 in the first year

After the first year the value will be

Therefore in five year the value will be

4800*5= $24000 devalued

Making the car zero worth

6 0
3 years ago
Danny poured 78 l of water into containers xy and z. the ratio of the volume of water in container x to the volume of water in c
Paladinen [302]

The ratio of x:y:z = 20:8:11

Total unit = 20+8+11 = 39

Value of 1 unit ratio = 78/39 = 2

So, the water in container X, 20(2) = 40 liters

Your answer is 40 liters

7 0
3 years ago
Help pleaseeeeee anybody ??????
GuDViN [60]

Answer:

24

Step-by-step explanation:

apex

8 0
3 years ago
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