Questions on Algebra: Systems of equations that are not linear answered by real tutors!

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Question 147125: x+y=100
0.5+0.40y=25
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Question 147119: x^2+y^2=11
2x^2-y^2=-2
Click here to see answer by jim_thompson5910(35256) About Me 
Question 147377: solve using the addition method
2x+5y=2
3x-2y=3
Click here to see answer by jim_thompson5910(35256) About Me 
Question 142284: Use elimination to solve the system of equations.
4x-9y=15
3x-4y=14
Click here to see answer by aswathytony(47) About Me 
Question 147408: An airplane flew for 3 hours with a tail wind of 40 km/hr. The Return flight against the same wind took 4 hours. Find The Speed of the airplane in still air.
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Question 147408: An airplane flew for 3 hours with a tail wind of 40 km/hr. The Return flight against the same wind took 4 hours. Find The Speed of the airplane in still air.
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 147640: The equation of the line through (8,6) and (2,) is:
Click here to see answer by jim_thompson5910(35256) About Me 
Question 147780: the soloution of the system of equations below
y=5-3x
4x-5y=13
how do i solve for x and y
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Question 147780: the soloution of the system of equations below
y=5-3x
4x-5y=13
how do i solve for x and y
Click here to see answer by jim_thompson5910(35256) About Me 
Question 148146: Hi,
Please Solve the systems of equations.
2x+Y=3
4x+3Y=1
Thank you!
Click here to see answer by jim_thompson5910(35256) About Me 
Question 148257: Hi,
Solve the sysytem of equations.
7X-2Y=3
3X+5Y=13
thank you!
Click here to see answer by Alan3354(69443) About Me 
Question 148445: I need help with the following word problem...
Fred and Nancy play a round of golf together. Their combined score is 223. Freds Score was 3 more than Nancys and Tigers score was 7 more than freds. What was each persons score.
Now I know I have to ma make 3 equations, but im still lost.
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 148557: Need to solve this equation, can anyone help.
5/2x + 1/4x = 3/4 + x
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Question 148441: Can you please help me solve this problem?
5/2x+1/4x=3/4+x
Click here to see answer by Edwin McCravy(20054) About Me 
Question 148577: I"m Trying to solve a word problem where I have to make three equations and solve. But after reading the problem I only see two equations...
Mike has 19 coins (nickels, dimes, and quarters) in his piggy bank with a total value of $2.35. There are two more dimes than nickels. How many of each type of coins does mike have.
So far I have n+d+q=235 and N= d+2 (I think?) and would the first equation answer the last sentence.
Please help me solve
Click here to see answer by aswathytony(47) About Me 
Question 148965: Solve the system of equations.
3x + 6y = 3.75
0.375x + 3y = 2.15625
Click here to see answer by mangopeeler07(462) About Me 
Question 149036: If x=1 and x= -8, then form a quadratic equation
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Question 149068: Write a quadratic equation with a, b, and c (coefficients of x to the second power, x, and the constant as Integers.
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Question 149175: System of two equations in two unknown

find the solution to the systems:
3y=-+1
3x+y=5

Can you please show step-by-step, how to get started
Click here to see answer by josmiceli(19441) About Me 
Question 150153: If possible, factor: f(x)= x squared + 49
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Question 150150: If possible, factor: f(x)= x squared - 6x - 91
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Question 150322: Solve the given equation and identify it as a conditional equation, an inconsistent equation, or an identity.
(8 – 8)(7 – p) = 0
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Question 150520: x=2y+z=2
5x=z
y=-2x
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Question 150805: Problem: The students from algebra class go for coffee together every day at 9:00 AM. On Monday, Jordan paid $5.45 for three cartons of milk, four cups of coffee, and seven doughnuts. On Tuesday, Ryan paid $5.30 for four milks, two coffees, and eight doughnuts. On Wednesday, Zack paid $5.15 for two milks, five coffees, and six doughnuts.
(1) Set up a system of equations to model this scenario.
(2) Determine the cost of one carton milk, one coffee, and one doughnut by solving the system.
(3) If on Thursday, Taylor had to pay for five milks, two coffees and nine doughnuts, then how much did he spend?

Click here to see answer by mangopeeler07(462) About Me 
Question 150955: Use a system of equations to solve the word problem. The perimeter of a rectangle is 56 inches, and its area is 192 square inches. What are the dimensions?
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Question 150955: Use a system of equations to solve the word problem. The perimeter of a rectangle is 56 inches, and its area is 192 square inches. What are the dimensions?
Click here to see answer by josmiceli(19441) About Me 
Question 150954: Use a system of equations to solve the word problem. The perimeter of a rectangle is 56 inches, and its area is 192 square inches. What are the dimensions?
Click here to see answer by stanbon(75887) About Me 
Question 150954: Use a system of equations to solve the word problem. The perimeter of a rectangle is 56 inches, and its area is 192 square inches. What are the dimensions?
Click here to see answer by checkley77(12844) About Me 
Question 151210: Could you please help me solve and place it into the ordered pairs?
y=3^5x+1
y=9^-x
Click here to see answer by jim_thompson5910(35256) About Me 
Question 151297: Can you help me solve this system algabraically and support the solutions graphically?
y+x^2
9x-y=20
(ordered pairs)
Click here to see answer by jim_thompson5910(35256) About Me 
Question 151299: Could you help solve:
8/x-5/y=51/14 6/x+(-10)/y=-(29/7)
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Question 151479: 3x+5y=0
x+4y=-7
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Question 152085: Solve the following system of equations. what is the value of z?
x+y+z=1
2x-y+3z=-7
3x+2y+2z=4
Click here to see answer by scott8148(6628) About Me 
Question 152174: solve the system using your choice of method:
x^2-y^2-4x+6y-4=0
x^2+y^2-4x-6y+12=0
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Question 152173: solve the system using your choice of method:
3x^2-2y^2=1
4x-y=3
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Question 152273: how do you solve this equation:
y=2x-5
y=6x+7
i don't understand how to do this and i haven't looked at one of these problems in a LONG time!
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 152561: how do u find the value of k that makes each equation true when x=4 and y=-3
a)y=kx+5 b)y=-2x+k c)y=-kx-7
Click here to see answer by jim_thompson5910(35256) About Me 
Question 152772: i can't figure this out and i need help!!
i need to understand how to slove this system:
-2x+3y=15
10x-11y=9
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Question 153100: 3x-2y=4
2x-5y=21
Click here to see answer by jim_thompson5910(35256) About Me 
Question 152809: solve using addition method:
3x^2-2y^2=-5
2x^2-y^2=-2

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Question 153400: How do you simplify the equation -w=14?
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Question 153466: #1Two sides of a triangle are 3 inches longer than the third side. If the perimeter of the triangle is 30 inches, what are the lengths of the sides?
#2Your business has $1,000,000 dollars in the bank. Your payroll is $50,000 per month, your overhead costs are $30,000 per month and your cost for producing goods is $70,000 per month. If your sales are only $100,000 per month, how many months will it take for you to file for bankruptcy if you cannot increase sales?
#3 You are driving a delivery van on a cross-country trip. You know that your truck gets about 5 miles per gallon of fuel and that you started with a full tank of gas (200 gallons). You have already traveled for a while when you stop for dinner. You top off the gas tank while you are stopped and pay for 100 gallons of fuel. If your ultimate destination is 300 miles from where you are now, how far will you be from your original starting point?
I dont know why but word problems are always a problem for me
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Question 154887: Karin biked at 13 mph for a time but got a flat tire. She then walked at 5 mph. She traveled a total of 93 miles. Had she biked the whole time, she would have gone 117 miles. How many hours did she walk?
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Question 154885: Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?
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Question 154884: Roberto invested some money at 7%, and then invested $2000 more than twice this amount at 11%. His total annual income from the two investments was $3990. How much was invested at 11%?
Click here to see answer by ankor@dixie-net.com(22740) About Me