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Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)
Question 176747: Flying against the jetstream, a jet travels 4410km in 9 hours. Flying with the jetstream, the same jet travels 7280 km in 8 hours. What is the speed of the jet in still air, and what is the speed of the jetstream?
I saw this question but it was a little different can you help please thanks.
Click here to see answer by ankor@dixie-net.com(6691)   |
Question 176776: Suppose a population of initial size 100 grows at the rate of 8% per year forever.
What is the size of the population at the end of year 1?
What is the size of the population at the end of year 2?
What is the size of the population at the end of year 3?
What is the size of the population at the end of year n (for any integer n)?
What algebraic equation would you need to solve to find the number of years x that it would take for our population to reach 200? Use a calculator to solve to x.
Click here to see answer by Mathtut(3670)  |
Question 176776: Suppose a population of initial size 100 grows at the rate of 8% per year forever.
What is the size of the population at the end of year 1?
What is the size of the population at the end of year 2?
What is the size of the population at the end of year 3?
What is the size of the population at the end of year n (for any integer n)?
What algebraic equation would you need to solve to find the number of years x that it would take for our population to reach 200? Use a calculator to solve to x.
Click here to see answer by stanbon(26259) |
Question 176743: In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 50 . The first car has consumed 30 gallons during that week, and the second has consumed 20 gallons, for a total of 1300 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in that week?
Click here to see answer by Mathtut(3670) |
Question 176743: In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 50 . The first car has consumed 30 gallons during that week, and the second has consumed 20 gallons, for a total of 1300 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in that week?
Click here to see answer by MathTherapy(336) |
Question 176788: Two rainstorms occurred in one week in a certain area. In the first storm 15mL of rain fell per hour, and in the second storm 35mL of rain fell per hour. Rain fell that week for a total of 50 hours for a total rainfall of1450 mL . How long was each storm?
My sister asked for my help here but I am not sure if I am doing correctly
Click here to see answer by Mathtut(3670) |
Question 176796: old navy sells t-shirts for $8.00 a piece. They run a special where you can buy 3t-shirts for $20.00. One saturday morning they sold a total of 19 t shirts for a total of 136.00 , how many people took advantage of the special??
Click here to see answer by Mathtut(3670) |
Question 176738: hey I have had this question but not getting it yet here it is with different numbers thanks so much for the help.
Two rainstorms accured in one week in a certain area . In the first storm 15 mL
of rain fell per hour. in the second storm 35 mL of rainfell per hour.rain fell that week for a total of 50 hours for a total rainfall of 1450 ml how long was each storm.
Click here to see answer by Mathtut(3670) |
Question 176769: I may have already sent this but I was not sure I am having trouble with these word problems.
A motorboat travels 648km in 9 hours going upstream and 588km in 6 hours going downstream. What is the speed of the boat in still water, and what is the speed of the current?
Thank you
Click here to see answer by Alan3354(6059)  |
Question 177232: A two-digit number is three less than the product of four and the
sum of its digits. The tens digit is 4 less than the units digit.
Find the number.
I used 10T + U = 4(T+U) - 3 and T= U-4
was this correct?
I got U=3 when I know T=3 and U=7
Is there a better equation to use?
Click here to see answer by gonzo(654) |
Question 177353: World Auto uses the formula p + -3000n + 17,000 to determine the wholesale price for a used Ford Focus, where P is the price in dollars and n is the age of the car in years.
a.) find the price for a Focus that is 1,2, or 3 years old
b.) Find the slpoe and p- intercept for the line
P = -3000n+ 17,000.
c.) Interpret the slope and P -intercept
0 solutions
Click here to see answer by Mathtut(3670) |
Question 177402: Bob will rent a car for the weekend. He can choose one of two payment plans. The first plan costs 57.98 for two days plus 13 cents per mile. The second plan costs 45.98 for two days plus 18 cents per mile. How many miles does Bob need to drive for the two plans to cost the same?
Click here to see answer by Mathtut(3670) |
Question 177887: A coin bank contains only qurarters and dimes. The total value of the coins is $10.40. If the dimes were quarters and the quarters were dimes the total value of the coins would be $9.20. Find the total number of dimes in the bank.
Click here to see answer by nerdybill(2446)  |
Question 177979This question is from textbook Algebra 1
: A migrating elephant herd started moving at a rate of 6 miles per hour. ONe elephant stood still and was left behind. Then this stray elephant sensed danger and began running at a rate of 10 miles per hour to reach the herd. The Stray caught up in 5 min.
How long (in hours) did the Stray run to catch up? How far did it run?This question is from textbook Algebra 1
Click here to see answer by Mathtut(3670) |
Question 177981: Find a value for k that will make 4x^2 + 6.4 x + k a perfect square. Describe the procedure that you used which requires algebra [that is, not trial and error].
been on this 1 for awhile just can't find the appropiate equation to make it work.
Click here to see answer by stanbon(26259) |
Question 177981: Find a value for k that will make 4x^2 + 6.4 x + k a perfect square. Describe the procedure that you used which requires algebra [that is, not trial and error].
been on this 1 for awhile just can't find the appropiate equation to make it work.
Click here to see answer by solver91311(5072)  |
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