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

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Question 124899: x punds of candy valued at $3.50 per pound is mixed with y pounds of candy valued at $4.30 per pound to produce 10 pounds of a mixture selling for $4 per pound. Find x and y, the number of pounds of each type.
Click here to see answer by checkley71(8403)

Question 124898: A total of $10,000 is invested in two funds paying 5% and 7% annual interest. The combined annual interest is $644. How much of the $10,000 is invested in each fund?
Click here to see answer by checkley71(8403)

Question 125067: Calvin paid his $1.35 skate rental with dimes and nickels only. There were 19 coins in all. How many of each coin were there?
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Question 125089: There were 166 paid admissions to a game. The price was $2.00 for aduls and $0.75 for children. The amount taken in was $293.25. How many adults and how many children attended?
Click here to see answer by checkley71(8403)

Question 125188: Find the x-intercept. y=x^2+x-6
Click here to see answer by jim_thompson5910(35256)

Question 125278: A jar contains 5-gram bolts and 10-gram bolts. The contents of the jar weigh 2.35kg. If there are 300 bolts altogether, how many are there of each kind?
Click here to see answer by checkley71(8403)

Question 125463: Three times the larger numbers is equal to four times the smaller. The sum of the numbers is 21. Find the numbers.
Click here to see answer by uma(370)

Question 125690: One number is 12 more than another.The sum of the smaller number and twice the larger number is 39. Find the larger number.
Click here to see answer by MathLover1(20850)

Question 126227: solve the system by addition method. if a unique solution doesn't exist, state whether the system is inconsistent or dependent.
2x-3y+z=5
x+4y-2z=-3
4x-2y+3z=6
I could really use some. I am pulling out my hair. Please.
Click here to see answer by uma(370)

Question 126223: divide (45x^3+20x^2)/5x
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Question 126269: Solve each of the following systems by graphing.
2x - y = 4
2x - y = 6
Click here to see answer by solver91311(24713)

Question 126350: x-5y=9
Click here to see answer by checkley71(8403)

Question 126352:
Solve each of the following systems by substitution.
5x - 2y=-5 y - 5x = 3
Click here to see answer by jim_thompson5910(35256)

Question 126352:
Solve each of the following systems by substitution.
5x - 2y=-5 y - 5x = 3
Click here to see answer by checkley71(8403)

Question 126422: Factor completely. 3x^2 + 4x � 15
Click here to see answer by josmiceli(19441)

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(64)

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

Click here to see answer by Edwin McCravy(20055)

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(75887)

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(507)

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(19441)

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(20850)

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(20850)

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(20850)

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(20850)

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(8403)

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(35256)

Question 127286: -5x+2y=-10
3x-6y=-18
Click here to see answer by jim_thompson5910(35256)

Question 127285: 4x+6y=15
-x+2y=5
Click here to see answer by jim_thompson5910(35256)

Question 127283: 3x+y=1
-6x+6y=-18
Click here to see answer by jim_thompson5910(35256)

Question 127282:

x=-3y+2 -x+2y=3
Click here to see answer by checkley71(8403)

Question 127298: 3x-y=4
-9x+3y=-12
Click here to see answer by jim_thompson5910(35256)

Question 127332: slove linear equation
-5x+8y=-22
Click here to see answer by jim_thompson5910(35256)

Question 127357: 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.
Click here to see answer by bucky(2189)

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(35256)

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(6628)

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(8403)

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(35256)

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

Click here to see answer by checkley71(8403)

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

Click here to see answer by jim_thompson5910(35256)

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

Click here to see answer by jim_thompson5910(35256)

Question 127377:
x � 2y = -2 x + 2y = 6
Solve this system of equations by graphing
Click here to see answer by checkley71(8403)

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

Click here to see answer by jim_thompson5910(35256)

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