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

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Question 913180: I need help with solving this equation. I have the correct answer but it has to be negative and I have come up with a positive
-2x + 10y = 1
6x + 5y = 4
Click here to see answer by richwmiller(17219)

Question 913387: Hi please help me with system of equations: So if angle A is congruent to angle B & angle C is congruent to angle D, and if angle A=(8x)degrees, angle B=(9x-9y)degrees, angle C=(3x+4y+5)degrees, and angle D =(2x-y+19) what is the measure of angle A?
Click here to see answer by stanbon(75887)

Question 913388: Hi please help me with this problem: If line segment BC bisects angle ABD and angle ABD=106 degrees, find x and y.
angle ABC=(5x-y)
angle CBD=(4x+2y+19)
Click here to see answer by stanbon(75887)

Question 913391: Two angles are complementary. One angle measures 15 degrees more than 2 times the measure of the other. What are the measures of the two angles?
Click here to see answer by stanbon(75887)

Question 913394: Dylan has $16000 invested in two accounts; one account pays 7.5% and the other pays 6.5% interest. If he received $1126 in interest in one year, how much does he have interested in each account?
Click here to see answer by richwmiller(17219)

Question 913568: Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).
The sum of two numbers is 36. Their difference is 4. Determine the two unknown numbers.
(NOTE: Show answer in the following format # and #. If not entered in this format, will be scored incorrect.)
Click here to see answer by mananth(16946)

Question 913583: I cant figure out how to do this:
Using the point-slope equation, find the equation containing (4, 9) and slope m = -3

Click here to see answer by MathLover1(20849)

Question 913673: x-y>-5
How do you graph this equation on a plane
Click here to see answer by Fombitz(32388)

Question 913680: Solve the system in three variables: y=3-x
2x+2y=6
Click here to see answer by Fombitz(32388)

Question 914236: f(x)=-2|-3x-6|+4
graph and find domain and range.
This is the question on my quiz today. Im not sure that it was +4 but i think it was.
can you please show table of values and the process, I was really lost.
Click here to see answer by josgarithmetic(39616)

Question 915246: what is the value of x in the equation 4(2x+1)=27+3(2x-5)
Click here to see answer by jim_thompson5910(35256)

Question 917166: solve -3(3x+3)=3x-3
Click here to see answer by jim_thompson5910(35256)

Question 917963: Eric is 2 times taller than Kevin but Kevin is 3 feet shorter than twice the height of Eric. What is each boy's height?
Click here to see answer by JoelSchwartz(130)

Question 918585: 5x+3/-2=30
Click here to see answer by ewatrrr(24785)

Question 919136: The directions on my paper say to solve each system
By graphing. Show your graphs and solutions. I am confused
On how to solve and graph the problem y=3x+2 and y=2x+1(both on same question)
Please help?

Click here to see answer by MathLover1(20849)

Question 919236: A bracelet that is supposed to be 18-Karat Gold weighs 238 grams. Gold weighs 19.3 grams per cubic centimeter. Copper weights 9 grams per cubic centimeter. The volume of the bracelet is 15 cubic centimeters of gold and copper. Is the bracelet really 18-Karat Gold?
How do I set this problem in a system of equation? (Substitution,Graphing &Elimination)

Much thanks . (:
Click here to see answer by MathLover1(20849)

Question 919323: A bracelet that is suppose to be 18k gold weighs 238grams. Gold weighs 19.3 grams per cubic centimeter. Copper weighs 9 grams per cubic centimeter. The volume of the bracelet is 15 cubic centimeters. Is the bracelet really 18k? I know that isn't, I need to set it up in substitution method.
Click here to see answer by ankor@dixie-net.com(22740)

Question 920018: solve system of equations
solve for x and y state the answer as an ordered pair
y = 5x -11
y = -2x + 10
Click here to see answer by Fombitz(32388)

Question 920031: Solve the following system of equations by graphing to find the point of intersection. Round to the nearest tenth, if necessary.
y = 8x � 10
y = �4x + 20

Click here to see answer by ewatrrr(24785)

Question 922088: which of the ordered pairs (-2,3) (0,-5) (2,-3) (3,-2) (4,3)(7,2) are solutions to the given equation x-y=5
Click here to see answer by ewatrrr(24785)

Question 922392: I need help on steps for solving a system of equations in substituting,elimination ,and graphing method for problem:
X+2y=10 3x-y=9
Thank you,
I tried
2y=x+10 y=-1\2 x10
3x-(1\5x15)=9
3x+1\3x-5=9
3.5x-5=9
(3,14)

Click here to see answer by Alan3354(69443)

Question 922395: I need help on direct variation,finding constant of variation,then find value of y when x=3
Y=3 when x=-2
Thank you
I tried
Y=9\2. K=-3\2
Click here to see answer by ewatrrr(24785)

Question 922396: I need help on steps for finding direct variation ,find the constatant of variation, then the value of y when x=3
Y=3\4 when x=1\8
Thank you
I tried
3\4 by 1\8. Y\3. K=6 y=18
Click here to see answer by ewatrrr(24785)

Question 922387: I need help on steps for solving a system of equations in substitution,elimination,and graphing method for problem:
X+3y=-4 x+4=0
Thank you,
This is how I tried to work it
Y=-x+0
X+3(-x+0)=-4
X+-3x+0=-4
-2x+0=-4
-2x\-2=-4\-2
X=2
(2,2)
Click here to see answer by MathLover1(20849)

Question 922738: Identify the inverse of, if it exists.
http://my.thinkwell.com/questionbank/94001-95000/94796/img/237409.jpg
Click here to see answer by Fombitz(32388)

Question 923498: Solve the equation x+y+z=6, x+2y+3z=14, x+4y+9z=36
Click here to see answer by TimothyLamb(4379)

Question 923569: what is the perimeter of a rectangle with the length of 5 more than twice the width
Click here to see answer by ewatrrr(24785)

Question 923714: How many solutions of the system x � y = 3 and x2 � y = -1 are there such that x and y are both real?
Click here to see answer by richard1234(7193)

Question 923715: Find all solutions (including solutions that are not real) to the following equations:
x2 � 144 = 0
x4 � 81 = 0
x3 � 27 = 0
z3 + 8 = 0

Click here to see answer by MathLover1(20849)

Question 924359: Solve the nonlinear system by substitution
{y=x^2-6x+9
{y=-2x+5
Click here to see answer by josgarithmetic(39616)

Question 924357: {2x+y=5
{x^2+y2=50
Solve the nonlinear system by substitution
Click here to see answer by Theo(13342)

Question 924800: 9x-4y=1
-3x+8y=-47
Click here to see answer by ewatrrr(24785)

Question 925309: 2x+3y-z=-1
x-5y-3z=0
3x+4y-1=0
Click here to see answer by TimothyLamb(4379)

Question 925625: x^2+y^2=12
y^2=4x

Click here to see answer by Fombitz(32388)

Question 925645: 2(5x-1)-7=3(x-1)+5-4x
please solve for X
Click here to see answer by MathLover1(20849)

Question 925889: 6b2 + 19b +10
Click here to see answer by Alan3354(69443)

Question 925883: 8c^2 + 38c + 35 factor
Click here to see answer by jim_thompson5910(35256)

Question 925884: 4b^3 + 16b^2 + 15b factor
Click here to see answer by jim_thompson5910(35256)

Question 926000: 5c2-13c-6=0
Click here to see answer by Fombitz(32388)

Question 926060: Matt and Anna are frequent flyers. They fly between two cities that are at a distance of 1980 miles apart. on one trip they flew into the wind and took 5.5 hours. the return trip with the wind behind them took about 4.5 hours. find the speed of the wind and the speed of the plane in the air.
Click here to see answer by TimothyLamb(4379)

Question 925999: The length of a rectangle is 8 inches more than twice its width. Its area is 90 in-squared. find the length of the rectangle.
Click here to see answer by TimothyLamb(4379)

Question 926001: s=vt+16t2
object released from 684 feet the initial velocity is 18 ft/s and air resistance is neglected how many seconds will the object hit the ground?
Click here to see answer by Alan3354(69443)

Question 926377: please help me solve this equation
x^2+2xy−y^2=−17
x^2−y^2=−45
Click here to see answer by MathLover1(20849)

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