Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 46949: the price of an item is given by p=2x^2-100. find the polynomial that represents the revenue generated fro the sale of x items.
Click here to see answer by stanbon(57222)

Question 46948: multiply
(x/3+3/4) (3x/4-3/5)
Click here to see answer by stanbon(57222)

Question 46898: the price of an item is given by p=2x^2-100. find the polynomial that represents the revenue generated from the sale of items.
Click here to see answer by fractalier(2101)

Question 47008: The lenght of a rectangle is 2 in. more than 8 times its width. If the area of the rectangle is 210 sq.in, find the dimensions of the rectangle.
Click here to see answer by Nate(3500)

Question 47006: solve -6(x+5)>-4x+14
Click here to see answer by Nate(3500)

Question 47005: solve 1/2(x-1)-1/4(1-x)=0

1/2= one half
1/4= one fourth
Click here to see answer by Nate(3500)

Question 47004: simplify (x^2-2x-15)/(x-5)
Click here to see answer by Nate(3500)

Question 46981: Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)
gt^2 for t
Click here to see answer by Nate(3500)

Question 47007: factor completely 10x^2y-30xy+20xy^2
Click here to see answer by tutorcecilia(2152)

Question 46979: Solve the equation.

Click here to see answer by tutorcecilia(2152)

Question 46982: Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)

Click here to see answer by venugopalramana(3286)

Question 46980: John has 24 coins in his pocket-nickels, dimes and quarters-amounting to $3.80. If he has twice as many nickels as quarters, how many dimes does he have?
Click here to see answer by venugopalramana(3286)

Question 47115: Percentage:
I have 49 apples.
38 of the apples are red.
What is the percentage of red apples?
Click here to see answer by tutorcecilia(2152)

Question 47129: Solve the equation
(1/3)^x=27
Click here to see answer by tutorcecilia(2152)

Question 47136: Property sold for $120,000, 15% more than when it was bought. What was the
original cost?
Click here to see answer by checkley71(8403)

Question 47130: Graph the function as a solid curve and its inverse as a dashed curve on the same axes.
f(x) = square root x+6

Click here to see answer by Nate(3500)

Question 47199: I think I did the first part correctly, but got stuck on what to do next..can you please help me? Thank you!
If 7x -3 = 25, then what is 2x + 9

3+3= 0
25 + 3 = 28
7x = 28
7x divided by 7 = x
28 divided by 7 = 4
Is that right so far, and what do I do next if it is?
Thank you in advance!!!!!
Click here to see answer by tutorcecilia(2152)

Question 47197: Hello, just want to make sure I showed the steps right:
3x + 5 = 2x - 9
This is what I did:
5-5 = 0
9-5 = -14
2x - 2x = x
2x - 2x = 0 x = -14 final answer Thank you!!!!!!
Click here to see answer by tutorcecilia(2152)

Question 47244: Please help having trouble.
Write the expression as a single logarithm with coefficient of 1. Assume that all variables represent positive real numbers.
2 log4 (3x - 4) + 4 log4 (6x - 5)
6 long8 (9x+9)
Click here to see answer by miguel(1)

Question 47256: Solve the equation.
(1/3)x=27
Click here to see answer by checkley71(8403)

Question 47263: Help Please

2(3x-6)+ 5(x^2-4)
Click here to see answer by checkley71(8403)

Question 47240: factor
25x^2-81y^2
Click here to see answer by checkley71(8403)

Question 47243: factor
16x^2-40xy+25y^2
Click here to see answer by checkley71(8403)

Question 47237: factor completely
20n^4-22n^3-12n^2
Click here to see answer by checkley71(8403)

Question 47235: find all positive values for k for which each of the following can be factored
x^2-kx+17
Click here to see answer by checkley71(8403)

Question 47285:
Find the value of k so that the equation will have exactly on rational solution.

Click here to see answer by checkley71(8403)

Question 47285:
Find the value of k so that the equation will have exactly on rational solution.

Click here to see answer by rah279852(1)

Question 47233: factor the trinomials completely
x^2-11x-60
Click here to see answer by checkley71(8403)

Question 47366: Hello,
I could use some help with this problem:
12/x+5 + 5/x = 20/x
Thank you,
Louis
Click here to see answer by Nate(3500)

Question 47419: factor each polynomial by grouping the first 2 terms and the last two terms.
x^5+x^3-2x^2-2
Click here to see answer by Nate(3500)

Question 47420: factor the polynomial completely by factoring out any common factors and then by grouping. Do not combine like terms.
3a^3+3ab^2+2a^2b+2b^3
Click here to see answer by Nate(3500)

Question 47416: the area of a rectangle of length x is given by 3x^2+5x. find the width of the rectangle
Click here to see answer by Nate(3500)

Question 47448: square root 4x - 3 = 2x - 3
Click here to see answer by longjonsilver(2297)

Question 47438: 2^(7 - 3x)=4^-1
Click here to see answer by longjonsilver(2297)

Question 47469: (y-11) - (y+6)=10y
Click here to see answer by checkley71(8403)

Question 47601: Please solve this equation. Thanks

Click here to see answer by Nate(3500)

Question 47600: Solve the equation.

Click here to see answer by Nate(3500)

Question 47600: Solve the equation.

Click here to see answer by atif.muhammad(135)

Question 47608: Solve the formula for the specified variable
A=(1/2)h(b^1+ b^2) for b^1
Click here to see answer by Nate(3500)

Question 47651: Solve the equation
2^(7-3x)= 4^-1

Click here to see answer by stanbon(57222)

Question 47650: solve the equation
(4x+1)^1/4=2
Click here to see answer by stanbon(57222)

Question 47712: there is a triangle that sides represent, 3/y^2, 1/x^2, and 5/x^2. find an expression that represents its perimeter.
Click here to see answer by venugopalramana(3286)

Question 47702: fungicides account for one tenth of the pesticides used in the u.s. Insecticides account for one fourth of all the pesticides used in the u.s.
The ratio of fungicides to inseticides used in the u.s. can be written 1/10 to 1/4. write this ration in simplest form.
Click here to see answer by aaaaaaaa(138)

Question 47697: write the expression in simplest form.
4x-28/5x-35
Click here to see answer by checkley71(8403)

Question 47708: find the perimeter of a rectangle if the sides are x/2x-5 and the other is
8/2x-5
Click here to see answer by checkley71(8403)

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, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 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, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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