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Katena32 [7]
3 years ago
7

If the smallest angle of rotation for a regular polygon is 18°, how many sides does polygon have?

Mathematics
1 answer:
lora16 [44]3 years ago
4 0

Answer:

20 sides.

Step-by-step explanation:

The external angles of a polygon sum to 360 degrees.

So it's 360/18 = 20.

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Whitney wants to buy a sweater for $36. If the sales tax rate is 8.25%, what will be the amount of sales tax on Whitney’s purcha
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Answer:297.00

Step-by-step explanation:

There's 2 total decimal places in both numbers.

Ignore the decimal places and complete the multiplication as if operating on two integers.

         3 6

×       8 2 5

+       1 8 0

+       7 2  

+   2 8 8    

=  2 9 7 0 0Rewrite the product with 2 total decimal places.

Answer = 297.00

Therefore:

36 × 8.25 = 297.00

6 0
2 years ago
Multiply each of the following numbers 7.32, and 0.006 by 10, 100, and 1,000. Then explain the pattern you can use to find the p
dangina [55]

7.32

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0.006

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The decimal place moves to the right depending on how many zeros the number has.

For example, if you had 0.6 multiplied by 100, you would move 2 decimal places to the right because 100 has two zeros.

3 0
3 years ago
What is the approximate circumference of a circle with a radius of 12 ft? Use 3.14 for pi?​
Svetach [21]

Answer:

c = 75.4 ft

Step-by-step explanation:

I did this based on my math! Hope this helps!

6 0
3 years ago
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Hypothesis testing on samples with fewer than 30 participants can be carried out by using the t-value for the corresponding leve
Eva8 [605]

Answer: true

Step-by-step explanation:

Z-tests are statistical calculations that can be used to compare the population mean to a sample mean The z-score is used to tellsbhow far in standard deviations a data point is from the mean of the data set. z-test compares a sample to a defined population and is typically used for dealing with problems relating to large samples (n > 30). Z-tests can also be used to test a hypothesis. Z-test is most useful when the standard deviation is known.

Like z-tests, t-tests are used to test a hypothesis, but a t-test asks whether a difference between the means of two groups is not likely to have occurred because of random chance. Usually, t-tests are used when dealing with problems with a small sample size (n < 30).

Both tests (z-tests and t-tests) are used in data with normal distribution (a sample data or population data that is evenly distributed around the mean).

3 0
3 years ago
Solve this linear equation for p.
Fynjy0 [20]

Answer:

11.2

Step-by-step explanation:

divide 160 by 14.3

6 0
3 years ago
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