Tutors Answer Your Questions about Linear Algebra (FREE)
Question 1151684: You are moving and need a rental truck. The rental company you have chosen charges a $70/day fee plus $0.20 for every mile you travel. Write a linear equation that expresses the total cost y, where x represents the number of miles you travel. Graph this equation.
answer::: y = 0.20x + 70
need help graphing please!
Click here to see answer by MathLover1(20849)   |
Question 1151971: One safe investment pays 7% per year, and a more risky investment pays 14% per year.
a. How much must be invested in each account if an investor of $100,000 would like a return of $9,100 per year?
b. Why might the investor use two accounts rather than put all the money in the 14% investment?
a. $__ is invested in the 7% account.
Click here to see answer by Theo(13342)  |
Question 1151971: One safe investment pays 7% per year, and a more risky investment pays 14% per year.
a. How much must be invested in each account if an investor of $100,000 would like a return of $9,100 per year?
b. Why might the investor use two accounts rather than put all the money in the 14% investment?
a. $__ is invested in the 7% account.
Click here to see answer by MathLover1(20849) |
Question 1151971: One safe investment pays 7% per year, and a more risky investment pays 14% per year.
a. How much must be invested in each account if an investor of $100,000 would like a return of $9,100 per year?
b. Why might the investor use two accounts rather than put all the money in the 14% investment?
a. $__ is invested in the 7% account.
Click here to see answer by greenestamps(13198)  |
Question 1154023: Kim is starting a business tutoring students in math. She rents an office for 400$ per month and charge 40$ per hour per student.
write an equation to represent the total profit kim makes each week.
If kim has 15 students for one hour per week how much profit does she make in 1 week?
How many students per week would kim have to tutor for 1 hour in order to make 800$ per week?
Click here to see answer by ramkikk66(644) |
Question 1154282: Find the sum of the geometric sequence −3, 15, −75, 375, … when there are 7 terms and select the correct answer below.
the options are:
A) -39,063
B) 39,063
C) 58,593
D) -58,593
if you can, please include a thorough explanation!!! thanks!
Click here to see answer by MathLover1(20849) |
Question 1154282: Find the sum of the geometric sequence −3, 15, −75, 375, … when there are 7 terms and select the correct answer below.
the options are:
A) -39,063
B) 39,063
C) 58,593
D) -58,593
if you can, please include a thorough explanation!!! thanks!
Click here to see answer by MathTherapy(10551)  |
Question 1154640: In 9 minutes, a conveyor belt can move 1,000 bushels of corn into a storage bin. A smaller belt can move 1,000 bushels to the storage bin in 13 minutes. If both belts are used, how long will it take to move 1,000 bushels to the storage bin?
Click here to see answer by josgarithmetic(39616) |
Question 1154641: An empty freight train traveled 60 miles from an auto assembly plant to an oil refinery. There, its tank cars were filled with petroleum products, and it returned on the same route to the plant. The total travel time for the train was
3 1/2 hours. If the train traveled 10 mph slower with the tank cars full, how fast did the train travel in each direction? thanks
Click here to see answer by ikleyn(52775)  |
Question 1154641: An empty freight train traveled 60 miles from an auto assembly plant to an oil refinery. There, its tank cars were filled with petroleum products, and it returned on the same route to the plant. The total travel time for the train was
3 1/2 hours. If the train traveled 10 mph slower with the tank cars full, how fast did the train travel in each direction? thanks
Click here to see answer by josmiceli(19441)  |
Question 1154669: A company is planning to buy new fork hoists for material handling, there are two models that will serve their needs, Model M & model R. The warehouse supervisor feels that a minimum of 3 model M hoists and 5 model R hoist will be needed. The supplier has 8 model M hoist and 10 model R hoist on hand for delivery. The company purchasing agent has decided that no more than 14 hoists can be purchased. Model M can handle 12,000 kilograms per hour and model R can handle 10,000 kilograms per hour. What number of hoist of each model should be purchased for maximum weight handling capacity? What is the maximum weight handling capacity?
Click here to see answer by Theo(13342) |
Question 1154674: Brianna makes banana bread and nut bread to sell at a bazaar. A loaf of banana bread requires 2 cup of flour and 2 eggs. A loaf of nut bread takes 3 cups of flour and 1 egg. Brianna has 12 cups of flours and 8 eggs on hand. She makes a $2 profit per loaf of banana bread and $2 per loaf of nut bread. To maximize profits, how many loaves of each type should she bake?
Click here to see answer by ikleyn(52775) |
Question 1154672: Paige owns a bakery and sells cookies and muffins. She charges 75 cent per cookie and $1.50 per muffin. When she buys the ingredients it cost her $2 for a big bunch of cookie mix and $2 for muffin mix. she has a budget of $22 per day.For every one cookie she sells,she sells two muffins but doesn't sell more than 12 items in an hour. How much money can Paige possibly make on cookies and muffins in an hour.(linear programming question)
(1) write the objective function from the question
(2) write the constraints from the question (inequalities)
Click here to see answer by greenestamps(13198) |
Question 1154799: An empty freight train traveled 60 miles from an auto assembly plant to an oil refinery. There, its tank cars were filled with petroleum products, and it returned on the same route to the plant. The total travel time for the train was
3 1/2 hours.
If the train traveled 10 mph slower with the tank cars full, how fast did the train travel in each direction?
Click here to see answer by ikleyn(52775) |
Question 1154810: The costs of a trucking company vary jointly as the number of trucks in service and the number of hours they are used. When 3 trucks are used for 6 hours each, the costs are $1332. Find the costs of using 10 trucks, each for 11 hours.
Click here to see answer by josmiceli(19441) |
Question 1154838: The number of days that a given number of bushels of corn will last when feeding cattle varies inversely as the number of animals. If x bushels will feed 23 cows for 9 days, how long will the feed last for 9 cows?
Click here to see answer by ikleyn(52775) |
Question 1156367: Suppose that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in its tank. When carrying 15 gallons of fuel, the plane weighs 1996 lbs. and when carrying 35 gallons of fuel, it weighs 2124 lbs. How much does the plane weigh when it is carrying 50 gallons of fuel?
Click here to see answer by josgarithmetic(39616) |
Question 1156725: Tell whether the function is linear. Then, evaluate the function when x = - 3.
a) f(x) = - 2xᵌ + 5 b) g(x) = 12 - 8x
I hope I pick the correct topic. I really don't answer this. Thank you to anyone who helps me answer the question.
Click here to see answer by Boreal(15235)  |
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