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

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Question 963687: How do I solve this system of equations
x + 2y + z = 135
x + y + z = 118
2x + 2y + 3z = 269

Click here to see answer by Alan3354(69443)

Question 963644: If x is greater than or equal to 0 and y is greater than or equal to 0, then which quadrant holds the solutions?
Steps and advice please.
Click here to see answer by astropeace(3)

Question 963900: Heather has to solve this system of equations using elimination. What should be her first step?
3x+6y=12
x+5y=10
Click here to see answer by Alan3354(69443)

Question 964470: Using the elimination to solve each system of equations
{{y=3x-5 and x-y=13}}

Click here to see answer by t0hierry(194)

Question 964782: -6x+6y=6
-6x+3y=-12 solve
Click here to see answer by Alan3354(69443)

Question 964853: X^2+y^2=5
Y=-x^2+3
Click here to see answer by Fombitz(32388)

Question 966032: Hi
I tried to solve this problem.
The difference between 2 positive intergers is 32. One positive integer is 3 times as great as the other. what are the 2 positive intergers?
Click here to see answer by Alan3354(69443)

Question 966590: (y=4x-6)
(y=x^2+7x-16)
Click here to see answer by josgarithmetic(39617)

Question 966594: x^2+y^2=196
x+y=14
Click here to see answer by macston(5194)

Question 967029: What is -3 y=2x-4
Click here to see answer by Alan3354(69443)

Question 967512: 3x-2y=2 y=2x

Click here to see answer by checkley77(12844)

Question 967678: Find the equation of the line that passes through the pair of points. Write your answer in slope-intercept form.

(−2, −4), (5, 3)

Click here to see answer by stanbon(75887)

Question 967683: I tried this problem and still do not have a answer.
What are the x,y intercepts for this line?
(-4,5)(8,-7)
Click here to see answer by MathLover1(20849)

Question 967681: I tried this problem and I still do not have the answer.

Graph the line with given slope and y-intercept b.
m= 6 , b=-1

Click here to see answer by Alan3354(69443)

Question 968024: the longest side of a right triangle is 7 ft longer than four times the length of the shortest side. the other side of the triangle is 7 ft shorter than four times the length of the shortest side. find the lengths of the sides of the triangle.
Click here to see answer by amarjeeth123(569)

Question 968605: I have tried to get the answer to this problem and still do not have it.
Solve the following equation.
x2 − 8x + 7 = 0
x = (smaller value)
x = (larger value)

Click here to see answer by josmiceli(19441)

Question 968867: Do anybody know the answer and solution I have tried several times to get the answer.

Find all solutions to the equation.

10x2 = 640

only x = 8
x = 8 or x = 64
x = 0 or x = 64
x = 8 or x = −8
only x = 64
Click here to see answer by checkley77(12844)

Question 968862: I tried this problem more than once and still have not come up with the answer.
It is suppose to be one of the numbers below.

Evaluate
g(2)
for the function
g(x).

g(x) = 5x2 + 6x − 2

68
30
36
64
34
Click here to see answer by Alan3354(69443)

Question 968863: I am having problems finding an answer could you send the solution. How would it look on a graph?

Find the graph of the solution to the inequality.

5x + 9 < 10x − 1

Click here to see answer by rothauserc(4718)

Question 969320: I tried to solve this problem and stil do not have the answer.

Solve for x.

z = 8x + y

x =
z + 8
y

x = 8(z − y)

x =
z + y
8

x =
z
8
− y

x =
z − y
8

Click here to see answer by Alan3354(69443)

Question 969322: I did this problem but I still do not have the answer.

Find all solutions to the equation.

5b2 + 20b = 0

b = 0 or b = −4
only b = 4
b = 0 or b = 4
b = 0, b = 4 or b = −4
only b = −4
Click here to see answer by solver91311(24713)

Question 969327: I tried this problem and I still do not have the answer.

Multiply. Give the answer in scientific notation.
(5x10to the 7th power)(9x10negative 4 to the 4th power)

Click here to see answer by Alan3354(69443)

Question 969413: I don't really understand the whole concept of this nd I have a test Monday morning
Click here to see answer by stanbon(75887)

Question 969381: I need help with this problem
Let f=(−1ˏ2)ˏ(0ˏ−2)g=(−1ˏ−3)ˏ(4ˏ1)ˏ(−4ˏ−3)
Find f+g and its domain
Click here to see answer by Theo(13342)

Question 961845: Mike gave his friend 53 coins that total $3.65. He gave him nickels and dimes. How many nickels and dimes there Mike give his friend?
Click here to see answer by AnlytcPhil(1806)

Question 970238: i have a math problem that says to build (draw)a rectangular platform with a perimeter of 74 feet and an area of 340 square feet. how would I make this on paper

Click here to see answer by macston(5194)

Question 970538: The symbol $ is defined by: a$b = a^2-4b^2 if x $y =3(y$x), express y in terms of x.
Click here to see answer by Edwin McCravy(20055)

Question 970810: solve the system {
x-y-2z=1
x-5y+2z=5
2x-3y-4z=2
Click here to see answer by amarjeeth123(569)

Question 968546: Find a function that models the simple harmonic motion having the given properties. Assume that the displacement is at its maximum at time
t = 0.
amplitude 6.45 in., frequency 30 Hz
Click here to see answer by Edwin McCravy(20055)

Question 971365: There are 4 pints of green paint in a gallon bucket.
The paint is made from equal amounts of yellow paint and blue paint.
To create a different shade of green, the mixture needs to be 80% yellow.
How many pints of yellow paint need to be added to the bucket to make the mixture 80% yellow?

Brandon says to get that shade of green, 6 pints of yellow paint need to be added to the bucket.
Bianca says that won't work. In two or more complete sentences, explain who is correct and why.
In your explanation, include the calculations to support the correct answer.

Click here to see answer by josmiceli(19441)

Question 963872: The ratio of incomes of two persons is 9:7. The difference in their weekly incomes is $200. What are their weekly incomes?
Click here to see answer by anand429(138)

Question 943780: Solve the system of equations in Problem

4x + 3y = 26
3x � 11 y = -7

Click here to see answer by anand429(138)

Question 972319: 3x-2y=-1
6x+y=3
Click here to see answer by Boreal(15235)

Question 972367: 4x+5y=69 12x+7y=135

Click here to see answer by Boreal(15235)

Question 972410: Hello! I need help on solving these systems of equations, quadratic
,

Click here to see answer by amarjeeth123(569)

Question 972410: Hello! I need help on solving these systems of equations, quadratic
,

Click here to see answer by MathTherapy(10552)

Question 972407: solve each system of equation:

Click here to see answer by josgarithmetic(39617)

Question 972636: Bill can travel 36 miles upstream in his hovercraft in 3 hours. If he can return in 2 hours, how fast can Mr. Compton travel in still water?
Click here to see answer by Alan3354(69443)

Question 972959: I am a extremely frustrated parent trying to help my son with his homework.
the first problem he has is as follows;
find the sum (3x^3 + 4x + 14) + ( -4x^2 +21)
Click here to see answer by josgarithmetic(39617)

Question 972960: Find the difference
(3d - 5d^3 + 2d^2)-(8d^3 + 6d-1)
I'm a parent trying to help my son. Thanks
Click here to see answer by josgarithmetic(39617)

Question 973171: A-6=2b
A+b=15
Click here to see answer by josgarithmetic(39617)

Question 973350: The roots of the equation ycube+ysquare-y-1=0 are?
Click here to see answer by lwsshak3(11628)

Question 974053: The average of a list of integers goes up by 2 when 21 is added to the list. If 7 is added to the new list, then the average reduces by 1. How many numbers were there in the original list?
Click here to see answer by rothauserc(4718)

Question 974055: Nancy drove 1 hour longer than Deborah at an average speed 4 kilometers
per hour faster than Deborah. Edward drove 3 hours longer than Deborah at an average speed 12 kilometers per hour faster than Deborah. If Nancy drove 80 kilometers more than Deborah, then how many more kilometers did Edward drive than Deborah?
Click here to see answer by ankor@dixie-net.com(22740)

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