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

Tutors Answer Your Questions about Systems-of-equations (FREE)

Question 137338: 4x+7y=8
Click here to see answer by checkley77(12569)

Question 137443: Hi,
Can you help me with this math problem?
13.) Solve the system.
4x2 - 4y2 = 20
3x2 + 2y2 = 35
The answer should be {(3, 2), (-3, 2), (3, -2), (-3, -2)}
Click here to see answer by oscargut(891)

Question 137536: Please help me solve this problem.
3.) Solve the system by addition.
x+2y=12
4x+3y=18
Click here to see answer by ankor@dixie-net.com(15646)

Question 137535: Can you please help me with this math problem?
2.)Solve the system by substition.
x+9y=53
2x+9y=52
Click here to see answer by Fombitz(13828)

Question 138122: x^2-x=12
I forgot how to do this.
Click here to see answer by vleith(2825)

Question 138767: A cellular phone compnay offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-300)+46.95, where it is assumed that t>300 minutes. What times will keep cost between $ 95.20 and $124.20?
For the cost to be between $ 95.20 adn $124.20,the telephoning times must be between ___ minutes and ___ minutes.
Click here to see answer by stanbon(57290)

Question 138950: I have three quadratic equations that need to be solved and graphed on one graph to show the relationship between the size of three curves.
we choose at least 6 plots - I chose for X - o,1,2,3,-1,-2,-3. I have to solve for Y.
The equations are:
1. y=2x^+10x+12
2. y= -1/2x^+4x+3
3. 2y=x^+4x+5
My problem has been how to solve these type of equations
Any help would be appreciated
Thank YOu
Sorry, my name is Leonora
Click here to see answer by solver91311(16877)

Question 139446: Graph the functions whose equations are given:
1. 2x + 5y = 5
2. y = x(2) - 4x + 3
Are these supposed to be parabola's?
Click here to see answer by checkley77(12569)

Question 139445: Graph the functions whose equations are given:
1. 2x + 5y = 5
2. y = x(2) - 4x + 3
Are these supposed to be parabola's?
Click here to see answer by checkley77(12569)

Question 140215: You are selling tickets for a high school concert. student tickets cost $4 and general admission tickets cost $6. You sell 450 tickets and collect $2340. How many of each type of ticket did you sell?
Click here to see answer by ptaylor(2048)

Question 140356: 2x+2y=12
-2x-y=-6
Click here to see answer by checkley77(12569)

Question 140701: What are the steps to solving the system
x^2+y^2=169
x-y=7

Click here to see answer by jojo14344(1512)

Question 140798: The path of a fallen object is given by the function s= -16t^2+v0t+s0, where v0 represents the initial velocity in ft/sec and s0 represents the initial height. The variable t is time in seconds and s is the height of the object in feet.
If a rock is thrown upward with an initial velocity of 32 feet per second from the top of a 40 foot building,how high is the rock after 0.5 seconds? After how many seconds will the rock reach maximum height?
Ive already answered the first question, i think it is 52 feet. Is this correct?
How do i set up my equation to answer the second question? (step by step please)
Click here to see answer by Fombitz(13828)

Question 140920: Solve
4 1/3x + 1 1/2 = 2 1/6
Click here to see answer by checkley77(12569)

Question 140919: solve -3(5-y) + 2 to 4th power = 18y
Click here to see answer by checkley77(12569)

Question 140918: Simplify:

Add: (3x to 2nd power - 5x to 3rd power - x) -2(x to 3rd power - 3x + 4)
Multiple (3x -5)(7x -5)
Click here to see answer by checkley77(12569)

Question 140917: Calculate : 5x - 1/2 if 2x + 3 = 19
Click here to see answer by checkley77(12569)

Question 140915: Simplify:
1/-5 to the -2 power
Click here to see answer by checkley77(12569)

Question 140913: Three times the mystery number was increased by 100, and the result was 12 less than the number. Find the mystery number.
Click here to see answer by checkley77(12569)

Question 140912: solve
a - 1/3 = -2/5
Click here to see answer by checkley77(12569)

Question 140914: Perform the indicated operations.
Use three unit multipliers to convert 16,000 cubic centimeters to cubic meters.
Click here to see answer by josmiceli(9668)

Question 140911: solve
0.2a - 0.9a + 7.5 = 10.3
Click here to see answer by checkley77(12569)

Question 140910: solve:
4b -3 (7b + 2) = b - 9
Click here to see answer by checkley77(12569)

Question 140909: What fraction of 4 2/3 is 4/9?
Click here to see answer by checkley77(12569)

Question 140909: What fraction of 4 2/3 is 4/9?
Click here to see answer by josmiceli(9668)

Question 140916: Find the LCM of cd to the 2nd power, c to the 2nd power d, and c to the 3rd power.
Click here to see answer by stanbon(57290)

Question 141086: 2x+3y=24
y+7x=46
Im stuck from the very begining...
Click here to see answer by jim_thompson5910(28545)

Question 13699: use the order of operations to simplify the expression
7-4[3-(4y-5)]
My book says the answer is 16y-25. I can not figure out how to get that answer.This is what I came up with
7-4[3-(4y-5)]
7-4[3-(-1y)]
7-4*4y
7-16y
Click here to see answer by jscott(1)

Question 141993: What are the steps taken to solve this problem algebraically?
5-(2)/(x-6) = (10-2x)/(x-6)
I know that first i have to find the LCD which is 6, then multiply that times both sides of the equation. I also know that the answer will be x=6 because of the denominator (it has a variable)and it can't possibly be a solution. Can you help me set this equation up step by step so that i can see exactly how the answer is obtained
Click here to see answer by HyperBrain(694)

Question 142285: Use elimination to solve the system of equations.
4x-9y=15
3x-4y=14
Click here to see answer by checkley77(12569)

Question 142317: I cannot figure this out. I tried systems of equations, both substitution and elimination, but could not get it to solve. Thanks
If cd=4 and C^2+d^2=10, what is (c+d)^2
Click here to see answer by nabla(475)

Question 142467: Solve the system using the method of your choice.
x=6y-4
1/2x-3y=-5
Click here to see answer by scott8148(6628)

Question 142781: Solve the system by the elimination method.
0.3x-0.2y=4
0.4x+0.5y=-55/17
Multiply equations by 10 to eliminate decimals.
3x-2y=40
4x+5y= -550/17
Then to eliminate y multiply the first equation by5 and the second equation by 2.
15x-10y=200
8x+10y=-1100/17
I have no idea what do do from here...Everytime I try my fractions come out wrong and I get lost.
Click here to see answer by checkley77(12569)

Question 142854: g(x)=5x/x^2+1
Can you help me find the verticle and horizontal asymptote I know y = none for the horizontal is this correct? Then what is the verticle?
Click here to see answer by nabla(475)

Question 143251: A motor boat traveled 12 miles with the current, turned around, and returned 12 miles against the current to its starting point. The trip with the current took 2 hours and the trip against the current took 3 hours. Find the speed of the boat and the speed of the current.
Click here to see answer by checkley77(12569)

Question 143378: This one is really confusing me, I need some help.
Solve the following system by substitution.

4x - 2y = 8
2x + 4y =8

Click here to see answer by jim_thompson5910(28545)

Question 143377: Wow, I need help with this...thank you!
Solve the following system by addition.

2x + 5y = 10
5x - 2y = 10

Click here to see answer by jim_thompson5910(28545)

Question 143375: I need to know what are the steps to find out this question:
x= 2y-1
3x-3y=9

My textbook is the Glencoe Alegebra 1 for Florida.
Click here to see answer by checkley77(12569)

Question 144025: Factor:
5x^3+20x^2+20x
Click here to see answer by jim_thompson5910(28545)

Question 144312: Solve the solution 7x-8y=24 and xy^2=1
I've done the following so far x=1/y^2
substitute so...7(1/y^2)-8y=24
7=24y^2+8y^3
let t=y^2...7=24t+8t^2......did I do this correctly?
8(t^2 +3t)=7
8(t^2+3t+9/4)=7+18 complete the square
8(t+3/2)^2=25...if I have done this correctly, then what are my next steps...
Click here to see answer by vleith(2825)

Question 144318: solve the solution
y=3^(2x+1)
y=9^(4-2x)
do you make the powers = one another for 2x+1=4-2x
Click here to see answer by vleith(2825)

Question 144318: solve the solution
y=3^(2x+1)
y=9^(4-2x)
do you make the powers = one another for 2x+1=4-2x
Click here to see answer by stanbon(57290)

Question 144393: if an item is marked up by 61%, how do you find out the original price.
Example:
Cost $10
Mark up by 61%= $16.1
Need to know how to find original amount before markup.
Click here to see answer by stanbon(57290)

Question 144328: -6[16a-8(2a-2)]
Click here to see answer by checkley77(12569)

Question 144433: BETWEEN THE YEARS 1990 AND 2000,THE ANNUAL PROFIT OF THE ALPHA COMPANY INCREASED BY ABOUT $70,000 PER YEAR.IN 1998, THE COMPANY HAD ANNUAL PROFIT OF $2,000,000. WRITE AN EQUATION IN SLOPE INTERCEPT FORM THAT GIVES THE ANNUAL PROFIT[P]FOR THE ALPHA COMPANY IN TERMS OF T.GRAPH YOUR EQUATION
Click here to see answer by stanbon(57290)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555