Tutors Answer Your Questions about Linear-systems (FREE)
Question 93420: Solve the system of equations using the addition (elimination) method. If the answer is a unique solution present it as an ordered pair: (x, y). If not specify whether the answer is "no solution" or "infinitely many solutions. Can you show me how to work this problem so I can do my homwwork?
4x + y =4
2x + 8y =0
Click here to see answer by jim_thompson5910(35256)  |
Question 93785: Here is the problem I received on a summer homework packet. I think there is not enough information to answer the question. Here is the question.
Two cell phone companies are promoting cell phone plans. Company A offers a flat fee of $90.00 per month. Comapny B offers a different plan. It will cost $15.00 per month for service .10 per minute. You will need to compare the two plans to decide which plan is better for you.
Sketch both equations on the same x - y plane.
How would you know which plan is better if minutes used or more information is given?
Thanks,
Matt
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 94628: I have another word problem that I need help with.
A professor started a project with a group of students, 60% of whom were boys. Due to some unavoidable reasons, six girls couldn't turn up, so the professor had to make some changes in the group. He admitted six boys. In doing so, the percentage of boys in the project increased to 75%. Find the number of boys and girls involved in the project initially.
Click here to see answer by stanbon(75887) |
Question 94777: A professor started a project with a group of students, 60% of whom were boys. Due to some unavoidable reasons, six girls couldn't turn up, so the professor had to make some changes in the group. He admitted six boys. In doing so, the percentage of boys in the project increased to 75%. Find the number of boys and girls involved in the project initially.
Click here to see answer by ptaylor(2198)  |
Question 96263: The two companies with top revenues in the Fortune 500 list for 2005 were Exxon Mobil and WlMart. Their revenues together totaled $656 billion. Wal-Mart revenues were $24 billion less than Exxon Mobil revenues. What were the revenues of each corporation?
Click here to see answer by tutorcecilia(2152)  |
Question 96328: You travel 575 miles in 8 hours. Part of the trip is made at 60mph and part of the trip is made at 80mph. Find the time traveled at each rate. This is the question. I have that distance =rate * time and 575=r*8. I also have that r=(60T+80t)/2 and T+t=8 but when i try to solve it I get a negative time. Thanks for trying to help.
Click here to see answer by checkley71(8403) |
Question 96328: You travel 575 miles in 8 hours. Part of the trip is made at 60mph and part of the trip is made at 80mph. Find the time traveled at each rate. This is the question. I have that distance =rate * time and 575=r*8. I also have that r=(60T+80t)/2 and T+t=8 but when i try to solve it I get a negative time. Thanks for trying to help.
Click here to see answer by Earlsdon(6294) |
Question 96925: ma scored 273 points last season for her high school basketball team. her points results from a combination of two-points shots and three-points shots. she made a total of 119 shots. how many of each type of shot did ma make?
define 2 variables and write 2 equations and solve them algbraically.
Click here to see answer by mathslover(157)  |
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