Answer:
1 yard
Step-by-step explanation:
the formula for the circumference of a circle is 2 times pi times the radius of the circle. so to find out the radius you divide the circumference by 2 and then by pi.
Added 37 to both sides and gotten x=66.
hope this helps!
Step-by-step explanation:
The volume for cylinder is V= πr2h
It gives is the volume of the cylinder is 720 π
We can cancle the pi from the Volume and the formula.
After that let h = 20.
You would add 12 to the number line because it would make it the opposite of -6 which is 6 then you go 6-12(MAKE SURE IN THAT ORDER) which would give you the opposite of 6 which is -6 so to show this draw a line from -6 to 6 then above that a line from 6 to -6
Answer:
90% is the answer for confidence interval
Step-by-step explanation:
Given that a field test for a new exam was given.75±0.05(75)
i.e. margin of error =0.05(75)=
The population under study was the seniors. Sample mean and std dev were calculated
Stated that the exam creator ased on the results, that on the same exam, 9 out of 10 seniors will have an average score within 5% of 75%
This implies that 9 out of 10 means in percent 90%
Hence the confidence interval is 90%
SInce 5% of 75 is given the range is 75±(75)
Margin of error =3.75
Confidence interval =(75±3.75)
=(71.25,78.75)
We can interpret this we are 90% confident that as sample sizes increase, and samples are drawn at random the average grades of seniors would lie between 71.25 and 78.75
