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

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

Question 180001: Please help me solve this equation: -4(3+x)+5=4(x+3)Also thanx alot mathtut...
Click here to see answer by Mathtut(3670)

Question 180281: It takes Akira 10 minutes to make a black and white drawing and 25 minutes for a color drawing. On Saturday he made a total of 9 drawings in 2 hours. Write and solve a system og equations to determine how many drawings of each type akira made.
So do you need in the equation that it takes 2.5 times more to make a color drawing? What I don't get is how to make the variables. And to slove this equation do you solve it by using elmination or by substitution?
Click here to see answer by Mathtut(3670)

Question 180319: Variation Problem
The time required to process a shipment of goods at Alco varies directly with the number of items in the shipment and inversely with the number of workers assigned. If 15,000 items can be processed by 8 workers in 10 hours, then how long would it take 12 workers to process 20,000 items?
Click here to see answer by stanbon(75887)

Question 180503: Hello I need help on showing my work for a word problem.
Here is an example
The measures of complimentary angles have a sum of 90 degrees. Angle A and B are complimentary, and their measures have a difference of 20 degrees. What are the measures of the angles.
I know the answers (35, and 55) but don't know how to set up the equations according to the question.
So please help.
Click here to see answer by stanbon(75887)

Question 180840: (a) What must be the two relationships beween a and b if x(x+a)(x+b)=x^3-4x^2-12x?
(b) Use your answer to part (a) to calculate the values of a and b.
Click here to see answer by radhika.anumanchi(1)

Question 181005: y+3x=8x-7
Click here to see answer by eperette(173)

Question 181364: Solve Variation Problem
Sam's found that the demand for coke products
varies inversely as the price of the product. When the price
of a coke product is $2.75, the weekly demand is 1250.
Find the weekly demand if the price is raised to $4.00.
Click here to see answer by Mathtut(3670)

Question 181373: x+y=6
y=2x-3
Click here to see answer by carter6949(26)

Question 181451: Lorena bought 10 packs of styrofoam cups for the graduation dance. a pack of fifty 12-oz cups costs $1.80 and apack of fifty 16-oz cups costs $2.40. Lorena paid a total of $21.60 excluding tax. How many packs of each size cup did she buy?
Click here to see answer by josmiceli(19441)

Question 181570: using elimination
4x-3y=-2
6x+4y=31
Click here to see answer by solver91311(24713)

Question 181569: using substitution
2x-y=0
X+3y=-56
Click here to see answer by vleith(2983)

Question 181505: Hello,
I am having a hard time trying to solve this system of eqaution. I hope you can help me.
X� - y = -2
X - y = 2
Thank you
Fabiana
Click here to see answer by Alan3354(69443)

Question 181999: x+y=3 and 3x-4y=-19

Click here to see answer by checkley77(12844)

Question 180229: System of Equations: John is going to Costa Rica over Spring Break. Before his trip, he purchases 10 travelers checks in denominations of $20, $50 and $100, totaling $370. He has twice as many $20 checks as $50 checks. How many of each type of denomination of travelers checks does he have?
Click here to see answer by MathTherapy(10549)

Question 182222: y=2x^2-5x-12
y=0.5x^2-3x+4

Click here to see answer by Fombitz(32388)

Question 182431: what is 3m-2n=13 and m+2n=7
Click here to see answer by Mathtut(3670)

Question 182691: You have just tuned into a football game. Your team is winning 27-18. The announcer says they have scored five times on field goals and touchdowns and haven't missed a point after touchdown yet. How many touch downs and field goals has your team made?
Click here to see answer by Mathtut(3670)

Question 182865: stefanie and judy went to the rodeo this weekend. stefanie bought 2 pretzels and 3 cokes for $8.25. Judy bought 3 pretzels and 1 coke for $4.50. how much sis one coke cost?

Click here to see answer by checkley77(12844)

Question 183002: Hello,
I need help Please with the following problem.
Solve the system:
2x + y + Z + w = 3
x - 2y - z + w = -3
x - y - 2z - w = -3
x + y - z + 2w = 4

I have tried adding 1 & 2 getting 3x - y + 2w = 0
Then taking 1 & multiplying it by 2 and then adding it to 3 and getting 5x+y=w=3
Then taking 4 & mutliplying it by -2 then adding it to 1 getting 3x+2y+3w=1
Then I am stuck because I don't know what to do next. I know I have to get rid of the same 2 variables. Any help would be greatly appreciated.
Thanks,
Jen

Click here to see answer by stanbon(75887)

Question 183776: x/(x-1) + 3/ (x+1) = 7
Click here to see answer by stanbon(75887)

Question 184065: Okay I am so lost on this question, so any help will be greatly appreciated.
Philip has 10 coins in his pocket. Philip has the same number of pennies as quarters and the same number of dimes as nickels. He also has one more nickel than he does pennies. If he has 97 cents, how many coins of each type does he have?
Click here to see answer by stanbon(75887)

Question 183947: Translate to a system of equations and solve.
The sum of two numbers is 14. Six times the first number minus three times the second number is 3. Find the numbers.
Click here to see answer by eperette(173)

Question 184180: Type the solution if there is one
Thpe none if there is no solution
Type an equasion of the line if there are many solutions

4x-4y=12
-4x+4y=20
Click here to see answer by solver91311(24713)

Question 184014: the length of a crayon box base is 3 more than 4 times its width.IF the perimeter of the crayon box is 21 centimeters,find the lenght and width.
Click here to see answer by checkley77(12844)

Question 184285: x^2-16=0
x^2+16x=-64
x^2+6x+5=0 Find The sum
x^2+3x=0
4s^2-49=
3x^2+5x+2=
2x^2-5x-3=
x^2+5x=
Thank you

Click here to see answer by Alan3354(69443)

Question 184300: I need some tricks or tips about how to solve this system:

Click here to see answer by stanbon(75887)

Question 185228: It says use the quotient rule to simplify the expression.

Click here to see answer by ZeratuelX(5)

Question 185192: Set up a system of equations solve: How many liters of a 10% acid solution and a 20% acid solution must be added together to get 45 liters of an 18% acid solution?
Click here to see answer by checkley77(12844)

Question 185229: It says use the quotient rule to simplify the expression.

9d^2c^7
________
36d^2c^3
Click here to see answer by checkley77(12844)

Question 185253: Four oranges and five apples cost $2.00. Three oranges and four apples cost $1.56. Find the cost of an orange and the cost of an apple.
Click here to see answer by stanbon(75887)

Question 185256: I am a Grandmother trying to help my grandson with his homework. I haven't taken Algebra in over 45 years. Please help me. This is a work problem from a print out so I don't know the text book ISBN.
Tyrone is twice as old as his daughter. In six years Tyrone's age will be three times what his daughter's age was six years ago. How old are they at present?
Click here to see answer by ankor@dixie-net.com(22740)

Question 185269: On a fishing trip, Mariko caught twenty-four fish. She caught some rockfish averaging 2.5 lbs. and some bluefish averaging 8 lbs. The total weight of the fish was 137 lbs. How many of each kind of fish did she catch?
this is from a print out not a text book. Thanks for your help.
Click here to see answer by feliz1965(151)

Question 185266: this is from a worksheet not a text book. I am grandma trying to help grandson
The perimeter of a rectangle is 160 ft. One fourth the length is the same as twice the width. Find the dimensions of the rectangle.
Thank you for your valued help!!
Click here to see answer by Mathtut(3670)

Question 185259: Differentiate (find the derivative) of the function 2/(√x) + x/(√3) + 6(3√x <-- cube root over x), the answer should be 1/(√3) - 1/√(x^3) - 2/(3√x^2) <-- cube root over x^2). Please show your steps.
Click here to see answer by solver91311(24713)

Question 185344: Find the product.
(6x+2)^2
Click here to see answer by vleith(2983)

Question 185343: (x+1)^2

says to multiply
Click here to see answer by jim_thompson5910(35256)

Question 185348: (3x+1)^2
Click here to see answer by jim_thompson5910(35256)

Question 185347: 7(x-3)^2 Find the product
Click here to see answer by solver91311(24713)

Question 185350:
(4x^5)^3
_______
(8y^6)
Click here to see answer by edjones(8007)

Question 185236: simplify the expression

(4x^5)^3
______
(8y^6)
Click here to see answer by feliz1965(151)

Question 185349: ^3
(4x^5)
_______
(8y^6)
Click here to see answer by Alan3354(69443)

Question 185543: (5x^2-1)^2
Click here to see answer by jim_thompson5910(35256)

Question 185546: (7x-8)^2
Click here to see answer by jim_thompson5910(35256)

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, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400