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how far can the customer drive if the car gets 4 miles per cubic foot of gas?
4 miles per gallon??? Horrible mileage.....
the first answer was rejected, the 10.95
they want the answer in ft^3, i guess
weird.... I was just thinking of it like in the real world. I have $40 dollars and I can only by approx 10.9 gallons at 3.65 maybe you need to input it as 10.9 (do you have instructions on what place to round to?)
well can you help me with 4 other questions please
i have this The compound interest formula is F = P(1 + i)^n where F is the total amount due, P is the initial cost or amount of money, i is the interest rate, and n is the number of periods interest is computed. A student purchases a $1300 laptop computer for school. The deal does not require payment until 2 years later. If interest is computed monthly, how much does the student have to pay at the end of 2 years? The monthly interest rate is 1.8 percent.
ok I will try, what do you have?
P=1300 i=.018 n = 12 because it is monthly but n = 24 because of 2 years F=1300(1+.018)^24 compute F
did you get 1994?
and 76 cents
That would be a bad deal, that means that person is willing to pay 694.76 to borrow 1300
my damn software rejected the answer
I still think the directions somewhere has to say how to input the solutions. Decimals are tricky. I am given you real world solutions but if the instructions are to round to the nearest whole number 1995 would be the only accepted answer.
ok what about this one A copper pipe, used for plumbing from the water main to a house, is 5 meters long and has a circular cross-section 3.2 cm in diameter. There is a 2.4 cm diameter hole in the center of the cross-section for the entire length of the rod. What is the volume of copper in the rod in cubic inches?
were you given a picture? Upload it by attaching the file.
yea theres the picture for the last problem
V=Bh B is a circle so B is pi(r^2) \[V=\pi r^2h\]
picture stated 1 gallon = 231 cubic inch we sort of needed that info earlier
original solution is 10.95*231=2529.45 cubic inches
|dw:1328667597151:dw| I think you will have a circle within a circle, but you should not be using diameter. Take half of the diameter and that is your radius
3.2/2=1.6, is that right
yes if d=3.2 then r = 1.6
so is h the 2.4?
no 5 is the height (it you stand the pipe up you will see that it is 5)