Answer:
x = 
Step-by-step explanation:
Note that
= 14
Expressed in exponent form as
= 14, thus
x = 
Answer:
I think the answer is 7.06cm
Step-by-step explanation:
cos28°=b(AB)/h(8)
AB=7.06cm
Answer:

And the value for n rounded up would be n = 174
Step-by-step explanation:
We have the following info given:
previous estimation for the deviation
the margin of error desired
represent the confidence
The Margin of error is given by:

If we solve for the value of n we got:

For this problem we know that the confidence is 98% so then the significance level would be
and the critical value would be:

And replacing we got:

And the value for n rounded up would be n = 174