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

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Algebra: Systems of equations that are not linear

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Question 126223: divide (45x^3+20x^2)/5x
Click here to see answer by uma(370)

Question 126269: Solve each of the following systems by graphing.
2x - y = 4
2x - y = 6
Click here to see answer by solver91311(5072)

Question 126350This question is from textbook algerba

: x-5y=9This question is from textbook algerba

Click here to see answer by checkley71(8405)

Question 126352:
Solve each of the following systems by substitution.
5x - 2y=-5 y - 5x = 3
Click here to see answer by jim_thompson5910(13794)

Question 126352:
Solve each of the following systems by substitution.
5x - 2y=-5 y - 5x = 3
Click here to see answer by checkley71(8405)

Question 126422: Factor completely. 3x^2 + 4x – 15
Click here to see answer by josmiceli(3013)

Question 126419: Factor. 3x(x + 2y) + 7(x + 2y) im not sure how far I can take this.
I have 3x^2+6xy+7x+14y am i right or do I need to go more?
Click here to see answer by apachemexican1(56)

Question 126439: Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).
y = –x² + 3x – 3

Click here to see answer by Edwin McCravy(2922)

Question 126602: Find values for m and b in the following system so that the solution to the system
is (-3, 4).
5x + 7y = b
mx + y = 22
Click here to see answer by stanbon(26297)

Question 126599: Solve each of the following systems by substitution.
8x - 4y = 16
y = 2x - 4
Click here to see answer by praseenakos@yahoo.com(417)

Question 126884: Could you please help me solve this? find the center (h,k) and radius r of the circle. I have no idea how to work out.
x^2+y^2-12x+6y+35=0
Click here to see answer by josmiceli(3013)

Question 126885: Factor by grouping. 48x^3 + 42x^2 – 8x – 7 im kinda at a loss right now with this one, please help.
Click here to see answer by MathLover1(1183)

Question 126955: solve this system of equation by graphing
1. 3x-6y=-9
2x-4y=-6
2. x+y=-6
-x+2y=6

Click here to see answer by MathLover1(1183)

Question 126964: solve by substitution
1. 4x + 5y= 6
y=2x - 10
2. 4x-3y=0
y=x+1
Click here to see answer by MathLover1(1183)

Question 126980: solve by substitution
1. 2x - y= -4
x+y = -5

2. 5x - 6y=21
x -2y=5

Click here to see answer by MathLover1(1183)

Question 126978: solve by addition If a unique solution does not exist, state whether the system is incosistent or dependent
1. 5x + 4y=7
5x - 2y =19

2. 3x -4y=2
4x -4y = 20
Click here to see answer by CHFS22144(5)

Question 126979: the length of a rectangle is 3in. less than twice its width. If the perimeter of the rectangle is 145 in. find the dimension of the rectangle.
Click here to see answer by checkley71(8405)

Question 126958: felix has 35 coins consisting of dimes and nickles. If the value of his coins is $3.30, then how many of each type does he have?
Click here to see answer by jchambliss(1)

Question 127287: 6x-y=-2
-18x+3y=4
Click here to see answer by jim_thompson5910(13794)

Question 127286: -5x+2y=-10
3x-6y=-18
Click here to see answer by jim_thompson5910(13794)

Question 127285: 4x+6y=15
-x+2y=5
Click here to see answer by jim_thompson5910(13794)

Question 127283: 3x+y=1
-6x+6y=-18
Click here to see answer by jim_thompson5910(13794)

Question 127282:

x=-3y+2 -x+2y=3
Click here to see answer by checkley71(8405)

Question 127298: 3x-y=4
-9x+3y=-12
Click here to see answer by jim_thompson5910(13794)

Question 127332: slove linear equation
-5x+8y=-22
Click here to see answer by jim_thompson5910(13794)

Question 127357This question is from textbook

: Please help, I'm stuck!
(Modeling)
In electronics, circuit gain is modeled by
G = Bt/R + R(base)t
Where R is the value of the resistor, t is temperture, R(base)t is the value of R at room temperture t and B is constant. The sensitivity of the circuit to temperture is modeled by
S = BR/(R + R (base)t)^2
If B = 3.7 and t is 90 K, find the values of R and R (base)t that will make G = .4 and S = .001.
I huge thank you to anyone who can get me goingon the right track.This question is from textbook

Click here to see answer by bucky(1732)

Question 127387: Solve by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
1. 5x + 4y = 7
5x – 2y = 19

2. 3x – 4y = 2
4x – y = 20

Click here to see answer by jim_thompson5910(13794)

Question 127378: Find values for m and b in the following system so that the solution to the system is (-6, 8).
5x + 7y = b
mx + y = 22
m = , b =

Click here to see answer by scott8148(3385)

Question 127483: Brazil nuts sell for $5 per pound and walnuts are sell for 3.50 per pound. How much of each type of nut would be needed to create 30 pounds of a mixture that would sell for $4 per pound?
Click here to see answer by checkley71(8405)

Question 127482: Solve by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
4x – 3y = 22
4x + 5y = 6

Click here to see answer by jim_thompson5910(13794)

Question 127480: Solve this system of equations by graphing:
x – 2y = -2
x + 2y = 6

Click here to see answer by checkley71(8405)

Question 127480: Solve this system of equations by graphing:
x – 2y = -2
x + 2y = 6

Click here to see answer by jim_thompson5910(13794)

Question 127484: Solve the system of inequalities by graphing:
2x + y < 6
y > 1

Click here to see answer by jim_thompson5910(13794)

Question 127377:
x – 2y = -2 x + 2y = 6
Solve this system of equations by graphing
Click here to see answer by checkley71(8405)

Question 127777: Solve this system of equations by graphing:
x – 2y = 8
3x – 2y = 12

Click here to see answer by jim_thompson5910(13794)

Question 128236:
-6(q+22)=5q
Click here to see answer by checkley71(8405)

Question 128238:
Click here to see answer by oscargut(682)

Question 128657: ok this one I really do not understand becuase they do not give me a value for x or anything.
Part A) Calculate the value of the discriminant of x^2+x+3=0
Part B) by examining teh sign of the discriminant in part a, how many x-intercepts would the graph of y = x^2+x+3 have? Why?
I know that to get the discrimant the equation is b^2 - 4ac, and that if the discriminant is positive the the solutions will be real numbers, and if it is a negative you will have two complex solutions. but how do I solve this if I do not know what the value of b is or the value of A and C
Click here to see answer by jim_thompson5910(13794)

Question 128655: If f(x)=2x^2 -7x+3 find
Part A f(2)

Part B f(-3)
I have tried to solve this by plugging the 2 in for x and for part A came up with -3 and for part B came up with 42. am I doing this correctly
Click here to see answer by jim_thompson5910(13794)

Question 128619This question is from textbook

: simplify the following
y+3x-7+2x-y
6d+7c-4c+6
5f+9+2d-7-f
Expand the following
3(x+4)
4(2m+3)
expand and simplify 3(x+4)+2(x+5)
4(d-1)+5(d+6)
4(w+5)+3(w-1)
thank youThis question is from textbook

Click here to see answer by durbz25(1)

Question 128698:
I need assistance on solving systems of equations in three variables, by elimation. The question is 2x-y+Z=5 6X+3Y-2Z=10 X-2Y+3Z=5. I'm not sure how to begin this, I know you need to elimate a variable. Can I lines the first and second equation and elimate the y variable? thanks
Click here to see answer by checkley71(8405)

Question 128618This question is from textbook

: simplify the following
y+3x-7+2x-y
6d+7c-4c+6
5f+9+2d-7-f
Expand the following
3(x+4)
4(2m+3)
expand and simplify 3(x+4)+2(x+5)
4(d-1)+5(d+6)
4(w+5)+3(w-1)
thank youThis question is from textbook

Click here to see answer by apachemexican1(56)

Question 129672This question is from textbook Algebra structure and meathod
: A chemist mixed a 20% acid solution with a 60% acid solution to make 10 L of a 30% solution. How many liters of the 60% solution were used?This question is from textbook Algebra structure and meathod

Click here to see answer by stanbon(26297)

Question 129670This question is from textbook Algebra structure and meathod
: Express 8% as a fraction in lowest terms.This question is from textbook Algebra structure and meathod

Click here to see answer by checkley71(8405)

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