Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 289504: Solve: 8y^3 + 27 divided by 2xy - 10y + 3x -15
Click here to see answer by richwmiller(9135)

Question 288968: what does it mean when a trinomial cannot be factored
Click here to see answer by Stickisaguy(1)

Question 289733: A backpacker wishes to cross the desert, an 8-day trip. The packer and each of her helpers can carry a maximum of 5 days’ worth of supplies. What is the smallest number of people who must start the hike in order for the backpacker to cross the desert and each helper to return safely to the starting point?
Click here to see answer by solver91311(16868)

Question 289782: If you drove 30 miles in 45 minutes how fast would you be driving? Express your answer in miles per hour.
Click here to see answer by richwmiller(9135)

Question 289787: Help! how can you turn 6x-4y=12 to y=mx+b form???
Angelica
Click here to see answer by amnd(23)

Question 288940: 2y-3=y
Click here to see answer by j1mmy94(14)

Question 287457: 3(z-2)=2(z-1)
Click here to see answer by j1mmy94(14)

Question 286732:
Click here to see answer by j1mmy94(14)

Question 288663: I am trying to do this equation any help is appreciated

Simplify: (x^-7 y^11 z^14)-2
Thanks
Eric
Click here to see answer by richwmiller(9135)

Question 289849: How do I solve for 'x' when (8.11-x)/x = .20 what are the steps you go through? thanks so much!
Click here to see answer by richwmiller(9135)

Question 289942: 4x-3y=10
2x-3y=2
Click here to see answer by brucewill(101)

Question 289941: Find the algebraic expresson for the quantity in italics using the given information:
The rate, given that the distance is 200 feet and the time is x + 3 seconds. (rate is italicized)
Click here to see answer by richwmiller(9135)

Question 289932: I need a rudimentary break down of 3x3 equations. I just can't figure it ot and need a step by step break down.
3x+2y+2z=2
x-2y-z=1
2x-3y-3z=-3
Click here to see answer by richwmiller(9135)

Question 290076: This is a multi-step equation. I need the steps and the answer. What is r: 3r/4-4/5=7/10
These are all fractions.
Click here to see answer by richwmiller(9135)

Question 290189: 325 is 80% of what number?
Click here to see answer by unlockmath(1599)

Question 290189: 325 is 80% of what number?
Click here to see answer by Deina(147)

Question 290299: I need to know how the answer was come up with.. 6 5/9 divided by 1 2/3 =59/15 .. how in the world and where did the 15 come from ?
Click here to see answer by jim_thompson5910(28476)

Question 290389: 4x-3=9
Click here to see answer by bcampbell23669(14)

Question 290411: write an equation : through (1,3) parallel to y=2x-3
Click here to see answer by stanbon(57219)

Question 290402: Solve each equation using the indicated method.
a) 2x^4 - 10x^2 = 0 (factoring method)

Click here to see answer by richwmiller(9135)

Question 290303: Find the value of n such that x2 + 2x + n is a perfect square trinomial.
Click here to see answer by checkley77(12569)

Question 290409: Write an equation : through (0,9) perpendicular to 3x-2y=4
Click here to see answer by MathLover1(6613)

Question 290465: I need help solving these two equations:
5/6(x-1)-2/3(2x+1)=3
x/2 + 1/x-1 = x/x-1
Thank you so much.
Click here to see answer by richwmiller(9135)

Question 290464: I have two different types of ratio word problems that I"m hung up on. I'm not get the equation I think.
Problem 1: If the ratio o freshmen to sophmores it 4:5 and there are 120 freshmen how many sophmores are there?
Problem 2: A softball players batting average is the ration of hits made to the number of times at bat. If Sylvia's batting average is 0.40 how many hits did she get in 25 times at bat?
thank you for the help!
Click here to see answer by richwmiller(9135)

Question 290569: I need help solving this equation. Thank you ahead of time for your help.
5/6(x-1) - 2/3(2x+1) = 3

Please note that 5/6 and 2/3 are fractions but not sure how to make the line straight.
Click here to see answer by stanbon(57219)

Question 290574: Please can you help, this is my 10 year old daughter's homework!
I have tried lots of different possibilities.
x+a=750
x-a=34
what is the value of x?
what is the value of a?
Click here to see answer by Earlsdon(6287)

Question 290572: 3=(x/9)-2
Click here to see answer by checkley77(12569)

Question 290601: Joley used a $20.00 gift certificate to help pay for dinner for her self and a friend. After an 18% tip was added to the bill,the $20.oo was deducted. the amount she paid was $8.90. what was the original bill?
Click here to see answer by richwmiller(9135)

Question 290614: The sum of two consecutive numbers is 49. What is the lesser number?
Click here to see answer by stanbon(57219)

Question 290615: George is 5 times as old as his son. In 15 years he will be only twice as old as his son. How old will his son be in 15 years?
Click here to see answer by stanbon(57219)

Question 290622: A shoe store sold 340 pairs of shoes in one day. The number of pairs of athletic shoes sold was 4 more than twice the number of pairs of dress shoes sold. How many pairs of athletic shoes were sold?
Click here to see answer by stanbon(57219)

Question 290609: The sume of 7 and twice a certain number is 10 more than the number. What is the nunmber?
Click here to see answer by College Student(505)

Question 290610: One number is 5 less than another. The sum of the two numbers is 181. Find the two numbers.
Click here to see answer by College Student(505)

Question 290612: When the sum of 8 and a certain number is increased by 12, the result is the same as the product of 3 and the number. What is the number?
Click here to see answer by College Student(505)

Question 290616: Nora is 4 years older than Diana. Two years from now Nora will be twice as old as Diana. How old is Diana now?
Click here to see answer by College Student(505)

Question 290617: There are two consecutive numbers. The sum of the lesser number and three times the greater number is 103. Find the two numbers.
Click here to see answer by College Student(505)

Question 290619: One number is two more than three times another. The sum of the numbers is 26. What is the lesser number?
Click here to see answer by College Student(505)

Question 290619: One number is two more than three times another. The sum of the numbers is 26. What is the lesser number?
Click here to see answer by richwmiller(9135)

Question 290623: Erica's uncle is three times as old as she is now. Four years ago, he was four times as old as she was then. How old is Erica now?
Click here to see answer by Earlsdon(6287)

Question 290623: Erica's uncle is three times as old as she is now. Four years ago, he was four times as old as she was then. How old is Erica now?
Click here to see answer by MathTherapy(1421)

Question 290704: In a small town, three children deliver all the newspapers. Abby delivers three times as many papers as Bob, and Connie delivers 13 more than Abby. If the three children deliver a total of 496 papers, how many papers does Connie deliver?
Click here to see answer by richwmiller(9135)

Question 290711: If I have the following equation:
x = y + (y - a)* t * (b/c)
and I know the values of x, a, t, b and c how do I find the value of y?
thanks
Antoine
Click here to see answer by richwmiller(9135)

Question 290748: x/2 + 1/x-1 = x/x-1
thank you for the help for solving this equation.
Click here to see answer by Earlsdon(6287)

Question 290800: Is 4 a solution of 2x=8?
Click here to see answer by richwmiller(9135)

Question 290860: the width of a rectangle is a fixed 17cm what lengths will make the perimeter grater then 92cm
Click here to see answer by stanbon(57219)

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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740