Tutors Answer Your Questions about Linear-systems (FREE)
Question 309466: Im REALLY stuck on this Algebra Equasion, Please Help Me!!!
I have these 2 formulas
12-x^2 -2xy = 0
...12-y^2 - 2xy = 0
...
for some reason x and y are both 2
how do you get this
i tried and got
y= 6/x -0.5x tried to sub into second one but gets messy any way to do this on a calculator by any chance but i want to know how to do it algebraically hmmmmm........
Click here to see answer by stanbon(75887)  |
Question 309466: Im REALLY stuck on this Algebra Equasion, Please Help Me!!!
I have these 2 formulas
12-x^2 -2xy = 0
...12-y^2 - 2xy = 0
...
for some reason x and y are both 2
how do you get this
i tried and got
y= 6/x -0.5x tried to sub into second one but gets messy any way to do this on a calculator by any chance but i want to know how to do it algebraically hmmmmm........
Click here to see answer by Theo(13342)  |
Question 309466: Im REALLY stuck on this Algebra Equasion, Please Help Me!!!
I have these 2 formulas
12-x^2 -2xy = 0
...12-y^2 - 2xy = 0
...
for some reason x and y are both 2
how do you get this
i tried and got
y= 6/x -0.5x tried to sub into second one but gets messy any way to do this on a calculator by any chance but i want to know how to do it algebraically hmmmmm........
Click here to see answer by richwmiller(17219)  |
Question 309523: Math You agree to pour water into cups for the Booster Club at a football game. The pitcher contains 64 ounces of water when you begin. After you have filled 8 cups, the pitcher is empty and must be refilled.
Write a function to represent the arithmetic sequence.
Click here to see answer by stanbon(75887) |
Question 310081: Word problem:
Translate the problem into a pair of linear equations in two vaiables. Solve the equations using either elimination or substitution. State your answer for the specified variable.
A garage owner wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for his customers. How many gallons of 100% antifreeze should he mix with some 10% antifreeze mixture in order to fill the drum?
I'm having difficulty writing equations from a word problem. Please show me the equations you created and steps to get to the answer. Please also show the answer. Thank you so much!
Click here to see answer by josmiceli(19441)  |
Question 310097: A company has sales (measured in millions of dollars) of 50, 60, and 75 during the first three consecutive years. Find a quadratic function that fits these data, and use the result to predict the sales during the fourth year. Assume that the quadratic function is of the form y = ax2 + bx + c
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 310994: Translate the problem into a pair of linear equations in two variables.
Jill is 11km away from Joe; both begin to walk toward each other at the same time Jill walks at 2.5km/hr. They meat in 2 hours how fast is Joe walking.
Click here to see answer by checkley77(12844) |
Question 311078: Trains A & B are traveling in the same direction on parallel tracks. Tran A is traveling 80 miles per hour and Train B is traveling 90 miles per hour. Train A passes a station at 12:00am. If Train B passes the same station 12:40am, at what time will Train B catch up to Train A? When will Train B catch up with Train A? What is the time and if am or pm? Please help. Thank you.
Click here to see answer by mananth(16946)  |
Question 311172: A group of students go out for lunch. If two have hamburgers and five have hot dogs, the bill will be $8.00. If five have hamburgers and two have hot dogs, the bill will be $9.50. What is the price of a hamburger?
Click here to see answer by mananth(16946) |
Question 311240: A ski chalet offers 2 weekend packages. One package provides 2 nights and 3 meals for $280. The other package provides 2 nights 5 meals for $320. Write and solve a system of equations to find the cost per night and meal. Using the variable n to define the number of nights and the variable m to define the number of meals, write the 2 equations that represent the 2 weekend packages that the ski chalet has to offer
Click here to see answer by OmniMaestra(21)  |
Question 311333: I need help with this problem please. In 1990, the life expectancy of males in a certain country was 61.1 years. In 1996, it was 63.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The linear function E(t) that fits the data is E(t)= ?t + ?(round to the nearest tenth). Then use the fuunction to predict the life expectancy of males in 2009. E(19)=? (round to the nearest tenth). Please help me with this. Thank you very much.
Click here to see answer by ankor@dixie-net.com(22740) |
Question 312097: A crayon in the shape of a cylinder surmounted by a conical tip has a total
length of 8 cm. and a diameter of 1 cm. The total volume is 5 cubic cm.
If x is the length of the cylinder and y is the height of the cone.
Find x and y.
I've been trying to solve this using the elimination method of a system
of linear equations in two variables.
Click here to see answer by Fombitz(32388)  |
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