Step-by-step explanation:

In order for us to find the circumference, we need to find the radius from the given area by rearranging the area formula.




Now that we have the radius, we can find the circumference.



So, when given 113.1 in sq for the area, the circumference of the circle is 37.68 in.
All angles in a triangle always equal 180 degrees, so to solve this problem you must set 8,3,4 equal to 180. 8x + 3x + 4x = 180. 15x = 180. 180/15 = 12. x = 12. Now you take the value of x and multiply it by the angle you are trying to find. 3(12) = 36.
The measure of the smallest angle is 36.
To check this problem, multiply all the angle ratios by the x value and if it equals 180, it is correct. 8(12) + 3(12) + 4(12) = 180.
Answer:
So, the population mean is 3.66.
Step-by-step explanation:
We will calculate the average value by summing all the values and dividing by the size of sample.
We have population contains six members, with values 1,1,2,3,5,10.
Therefore, n=6.
We use the formula to calculate the population mean:

So, the population mean is 3.66.
7 because 3 times 7 is equals 21