3.7321
Tan 75 degrees is the value of tangent trigonometric function for an angle equal to 75 degrees. The value of tan 75° is 2 + √3 or 3.7321 (approx).
Answer:
6.28
Step-by-step explanation:
This problem bother on the mensuration of flat shapes, a circle.
Volume v =
Diameter d= 
Radius r = 
Since we are required to solve for the circumference of a circle
The expression for the circumference of a circle is given as


The question insist that we type just a number hence the circumference
of the plug is 6.28
Answer:
They should sample the results of 1990 patient results.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the z-score that has a p-value of
.
The margin of error is of:

A reproductive clinic had a success rate of 25% of patients with live births in 2008.
This means that 
99% confidence level
So
, z is the value of Z that has a p-value of
, so
.
If they want their estimate to be within 2.5%, how many patient's results should they sample if they plan to use a 99% confidence interval?
They should sample n patients.
n is found for
. So






Rounding up:
They should sample the results of 1990 patient results.
Answer:
2 divide by 10 will give you 0.02