Answer:
a) Area
b) 3,848 in. cubed
Step-by-step explanation:
Since we need to find the area of a circle, we have to insert the value of the radius (diameter ÷ 2) into the equation:

Answer:
32 degrees
Step-by-step explanation:
It a isosceles triangle , so what you do is 180-116 and divided that by 2
Answer: Isolate the variable by dividing each side by factors that don't contain the variable.
k = −1
Answer:
So the answer for this case would be n=220 rounded up to the nearest integer
Step-by-step explanation:
Information given
represent the population deviation
represent the margin of error
The margin of error for the true mean is given by this formula:
(a)
And on this case we have that ME =5 and we are interested in order to find the value of n, if we solve n from equation (4) we got:
(b)
The critical value for 90% of confidence interval now can be founded using the normal distribution. The significance level is
and the critical value would be
, replacing into formula (b) we got:
So the answer for this case would be n=220 rounded up to the nearest integer