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Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)
Question 232461: I need to find a linear equation for the forest area in the sudan. In 1990 the forest area was 763814 sq.Km. In 2005 the forest area was 675458 sq km. What linear equation would show the decrease in forest area. Furthermore, what will the forest area be in 2010?
Click here to see answer by stanbon(26259)  |
Question 232543: Your math teacher tells you that next week's test is worth 100 points and contains 38 problems. Each problem is worth either 5 points or 2 points. Because you are studying systems of linear equations, your teacher says that for extra credit you can figure out how many problems of each value are on the test. How many of each value are there?
Click here to see answer by ankor@dixie-net.com(6691)  |
Question 232750: A gold and copper bracelet weighs 238 grams. The volume of the bracelet is 15 cubic cenimeters. Gold weighs 19.3 grams per cubic cenimeter and copper weighs 9 grams per cubic cenimeter. How many grams of copper are mixed with the gold?
Click here to see answer by josmiceli(3003)  |
Question 233196: Consider the various tasks and activities completed throughout your day. Identify once such task / activity that could be readily described via a function. Describe this particular task / activity and identify and explain the corresponding function representing this task / activity.
Click here to see answer by ly12603(33)  |
Question 233258: A bank teller has $750 in ten and twenty dollar bills. If she has twice as many twenty dollars bills as ten dollar bills, how many of each type does she have?
____ Ten Dollar bills _______ Twenty Dollar Bills
Click here to see answer by rfer(2688)  |
Question 233447: Your family is planning to open a restaurant. You need an initial investmetn of $85,000. Each week your costs will be about $7,400. If your weekly revenue is $8,000, how many weeks will it take to break even. Show equation #1 and equation #2.
Click here to see answer by checkley77(7035)  |
Question 233623: When three pumps, A, B, and C, are running together, they can pump 3500 gal per hour. When only A and B are running, 2100 gal per hour can be pumped. When only A and C are running, 2400 gal per hour can be pumped. What is the pumping capacity of each pump?
Click here to see answer by Alan3354(6059)  |
Question 233628: What volume of each of a 5% acid solution and a 70% acid solution should be combined to form 44 mL of a 50% solution? Set up the appropriate euations and solve the system using the inverse of the coefficient matrix.
Click here to see answer by Earlsdon(4898)  |
Question 233812: A store sells cashews for $5.00 per pound peanuts for $1.50 per pound. The manager decides to mix 30 pounds of peanuts with some cashews and sell the mixture for $3.00 per pound. How many pounds of cashews should be mixed with the peanuts so that the mixture will produce the same revenue as would selling nuts serparetly?
Click here to see answer by stanbon(26259)  |
Question 234020: I think this will be a linear equation, but I'm not sure. I don't even know where to begin. Can you please help? The problem is:
John says to Brenda, "If you give me $7, we will have an equal amount of money." Brenda responds, "That may be true, but if you give me $7, I will be $1 short of having twice as much money as you." How much money did John and Brenda have?
Hint: When one person loses $7, the other person gains $7.
Click here to see answer by ankor@dixie-net.com(6691)  |
Question 234400: Maria added white vinegar solution of acetic acid in water. There are 2 strengths of white vinegar-a 5% solution and a 10% solution. How many millilitres of each solution must she mix to make 50mL of a 9% vinegar solution?
Click here to see answer by josmiceli(3003)  |
Question 234428: A local computer center charges nonmembers $5 per session to use the media center. If you pay a membership fee of $25, you pay only $3 per session. Write an equation that can help you decide whether to become a member. Then solve and interpret the solution.
Thanks
Click here to see answer by rfer(2688)  |
Question 234633: A man has 35 coins consisting of dimes and quarters. The total value is $5.15. How many of each coin does he have? I know that there are 24 dimes and 11 quarters (working it backwards) but I can't figure out what the equation should be to solve for this problem. Can ANYONE please help me?
Click here to see answer by stanbon(26259)  |
Question 234633: A man has 35 coins consisting of dimes and quarters. The total value is $5.15. How many of each coin does he have? I know that there are 24 dimes and 11 quarters (working it backwards) but I can't figure out what the equation should be to solve for this problem. Can ANYONE please help me?
Click here to see answer by solver91311(5072)  |
Question 234844: A tourist agency can sell up to 1200 travel packages for a football game. The package includes airfare, weekend accommodations, and the choice of two types of flights: a nonstop flight or a two-stop flight. The nonstop flight can carry up to 150 passengers, and the two-stop flight can carry up to 100 passengers. The agency can locate no more than 10 planes for the travel packages. Each package with nonstop flight sells for $1200, and each package with a two-stop flight sells for $900. Assume that each plane will carry the maximum number of passengers. How do you suppose to graph this feasible region? What is the coordinates of the vertices of the feasible region?
Click here to see answer by ankor@dixie-net.com(6691)  |
Question 235209: the manager of a coffe shop has one type of coffee that sells for $6 per pound and another type that sells for $14 per pound. the manager wishes to mix 100 puonds of the $14 coffee to get a mixture that will sell for $8 per pound. how many pounds of the $6 coffee should he use?.
Click here to see answer by josmiceli(3003)  |
Question 235217: A plane traveled 580 miles to Ankara and back. The trip there was with the wind. It took 5 hours. The trip back was into the wind. The trip took 10 hours. Find the speed of the plane in still air and the speed of the wind. i know this should be relatively easy, but for some reason I am having a brain block and can't seem to make any headway on this problem. Any help you can provide will be GREATLY appreciated!
Click here to see answer by scott8148(3382)  |
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