Answer:
Exact circumference is 
Approximate circumference is 
Step-by-step explanation:
We are given;
- The diameter of a circle as
We are required to determine the exact and approximate circumference of the circle.
- We know that the circumference of the circle is given by;
- Circumference = πD, where D is the diameter
Taking π as 3.14
The exact circumference of the circle is
Thus, the approximate circumference of the circle is
2/5 of 30 = 12
30 + 12 = 42
£42
1. The table shows the results of drawing colored marbles from a bag. <span>Based on theoretical probability, the best prediction for the number of times a red marble would be drawn in 1000 trials is 167. The answer is letter C.
2. </span>A spinner has ten equal sections labeled A through J. In 50 spins, the spinner stopped on the section labeled J 12% of the time. <span>The percent of times the spinner stops on J will be exactly 10%. The answer is letter C.</span>
I'm guessing the answer is 6in.
because the original width of the photo is 8in-4in
which is 4in.
and 8 to 10 is a difference of 2
so add 2 to 4
its 6
Answer: 
Step-by-step explanation:
As per given , we have
n = 11
Since population standard deviation is missing, so we use t-test.
Critical t-value for 99% confidence :
[using two-tailed t-value table]
Confidence interval :
Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.=
