OK my friend if you times 15 by each of the amount of hours you will find out which one it is but in this case it will be 15 times 6 hours will equal out to be $90
Answer:
x - 79.25
Step-by-step explanation:
Let x represent the original amount of money that Ms. Liu had in her bank account.
Find how much money she spent on gasoline, by multiplying 15.85 by 5:
15.85(5)
= 79.25
To represent how much money she will have left, subtract this from x:
x - 79.25
So, the expression to find the change in her account is x - 79.25
Answer:
The 98% confidence interval would be given by (55.639;62.361)
Step-by-step explanation:
Information given
represent the sample mean
represent the sample deviation
represent the sample size
Solution to the problem
The confidence interval for the mean is given by the following formula:
(1)
The degrees of freedom are given by:
The Confidence is 0.98 or 98%, the significance would be 
and 
,and the critical value would be 
And replacing we got:
The 98% confidence interval would be given by (55.639;62.361)
Answer:
D
Step-by-step explanation:
r=8/2=4 ( the radius)
S=2*pi*r(r+h)= 2*3.14*4*(4+8)=2*3.14*4*12=96*3.14=301.44
so D is the closest
Answer:
A = 18 km^2
Step-by-step explanation:
