Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 157289: I really have a hard time with word problems and just don't know where to start.
Click here to see answer by midwood_trail(310)

Question 157343: Find the variation constant and an equation of variation where y varies directly as x and y=8 when x=4. The variation constant is k=?. The equation of variation is y=?
Click here to see answer by Fombitz(32388)

Question 157345: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function f(x)=-2x^2+2x+9.
The x coordinate of the vertex is? (Type a simplified fraction)
The y coordinate of the vertex is? (Type a simplified fraction)
The equation of the line of symmetry is x=?
The maximum or minimum of f(x) is?
The value of f(x)=19/2 is maximum or minimum?
Click here to see answer by jim_thompson5910(35256)

Question 157357: MAYSOMEONE HELP ME WITH THIS PROBLEM??
5(x+y) + 9(x+y)

Click here to see answer by checkley77(12844)

Question 157122: How do I solve 8x/3+3=1/8. My first thought was find a common deminominator which I choose 24 multiple both side by 24. After I did all the math I got it down to 64x=-141 which is going to give me a decimal for x so I knew I must be doing something wrong because we have not gotten that far yet.

Click here to see answer by ankor@dixie-net.com(22740)

Question 157411: I'm trying to solve the formula in terms of the given variable.I've been able to solve the rest, but on this one the variable is in the form of a fraction and I'm not sure what to do.The 3+b has a line under it and the e is on bottom, the 2 is under the f. This was not in a textbook, it's a worksheet.
b+3/e=f/2
solving for e
Click here to see answer by Earlsdon(6294)

Question 157457: suppose instead that the town experiences growth that can can be moldeled by the following:P=1000^t+P0 where t is the number of years from 2010.
Click here to see answer by midwood_trail(310)

Question 157465: I did this problem on a homework assignment and got it wrong it stumped me because I was trying to find a common denomonator for the multiplication. I need to know how this is solved step by step if someone could take me through it please.
Multiply (-15/42)(1/8)(-21/17)(-1/17)
Click here to see answer by gonzo(654)

Question 157496: I trying to find the inverse of a function. I have to solve for y but I don't know how to do this when there is a variable on the top and bottom.
x(x-5)= y ----------> y(y-5)=x ???
Click here to see answer by jim_thompson5910(35256)

Question 157514: (((find the value of x and y if x^y+y^x=1061)))
Click here to see answer by Edwin McCravy(20055)

Question 157497: 2/3x=0.9
Click here to see answer by Alan3354(69443)

Question 157573: rectangle where length is one more unit than width ,,the area is 30 square units ,,,what are the length and width dimensions,,,,,neeed the equation
Click here to see answer by Alan3354(69443)

Question 157490: A collection of dimes and nickles is worth $8.40. There are 106 coins in all. How many of each?
Click here to see answer by checkley77(12844)

Question 157592: I keep working the problem and get a fraction as an answer. I get w= -17/2
-5/8(16w - 24) + 35
Click here to see answer by Earlsdon(6294)

Question 157603: Need help soving this equation for X:
2x+bx=6c
Thank you
Click here to see answer by checkley77(12844)

Question 157633: (((Please give me a step wise solution for equation x^y+y^x=1061)))
Click here to see answer by Fombitz(32388)

Question 157761: I really dont get equations, can you help me?
Click here to see answer by jim_thompson5910(35256)

Question 157818: Please help me with this question :)
d+4(d+6)=-1
Click here to see answer by jim_thompson5910(35256)

Question 157823: please help me with this question :)
-10+4(3p+10)=18
Click here to see answer by jojo14344(1513)

Question 157823: please help me with this question :)
-10+4(3p+10)=18
Click here to see answer by Electrified_Levi(103)

Question 157822: please help me with this equation :)
4c+3(c-2)=-34
Click here to see answer by mizjoice(22)

Question 157822: please help me with this equation :)
4c+3(c-2)=-34
Click here to see answer by jojo14344(1513)

Question 157786: need help solving
1/2(4x+6)=2x+3
I got 1/2x4/1=2 1/2x6/1=3 now I am stuck please help
Click here to see answer by jojo14344(1513)

Question 157828: please help me with this equation :)
(5-y)+(6-y)-(5-y)=0
Click here to see answer by jojo14344(1513)

Question 157842: Factor completely 16x^4-40x^2+9
Click here to see answer by jojo14344(1513)

Question 157830: (c+3)-2c-(1-3c)=2
Click here to see answer by jojo14344(1513)

Question 157736: 2+6y=3x+4
Thanks in advance!
Click here to see answer by jojo14344(1513)

Question 157844: Literal Equations: Solve for X, then use the solution to solve the equation.
ax + b = cx - d; 2x + 9 = 7x -1
Can't figure out what to do with the first part. Thanks.
Click here to see answer by edjones(8007)

Question 157883: Airplane flys at 550mph leaves new york at 9:07am going to california which is 3142mil away. what is the estimated time of arrival? Time on a Clock. using the equation D=v*T D=distance V=valosty T=time
Click here to see answer by gonzo(654)

Question 157886: 2x-3x = 11 solve for x
Click here to see answer by SAT Math Tutor(36)

Question 157894: 13x-4(2x-5)=15 solve for x
Click here to see answer by atique.ah(27)

Question 157898: I need help with this question
9w+1/2+w-4/4=28
Click here to see answer by oscargut(2103)

Question 157898: I need help with this question
9w+1/2+w-4/4=28
Click here to see answer by jim_thompson5910(35256)

Question 157891: 3/4 (x+2) = -1
Click here to see answer by jim_thompson5910(35256)

Question 157998: what is the factor of x^2-x-1
Click here to see answer by vleith(2983)

Question 157153: 5x+6-2x=15

Click here to see answer by mlhuff12(3)

Question 158030: Eight times a number plus 6 less than twice the number is 34
Click here to see answer by integral13(8)

Question 158049: Solve each system of equations algebraically using the method of substitution or the method of elimination. If the system has no solution, say it is inconsistent.
2. 2 x + 3y = 2
7x � y = 3
- y = -7x + 3 then substitute 2x + 3 x -(-7x + 3) = 2, 2x + 21x + 6 = 2, 23x + 6 = 2 Am I headed in the right direction? How do I complete? Stuck
Click here to see answer by jim_thompson5910(35256)

Question 158057: Dividing Rational equations
The problem is
x^2-3x-40(over/)5x divided by (x+5)
I tried to work it through, and this is what I got so far.
x^2-3x-40(over/)5x times 1 over x+5
(x-8)(x+5) over 5x times 1 over x+5
x+5 cancels out because there are 2.
so I got
1x-8 over 5x
I am just not sure if this is the answer, or if it can be factored further, or if the x's can cancel out.
Thanks soooo much for your help!
Click here to see answer by jim_thompson5910(35256)

Question 158059: x^3+96-6x^2-16x/3x^3-648 divided by 4x^2+16x-64/6x^2-26x+216

I don't even know how to begin to slove this problem. Thanks so much for your help!
Click here to see answer by jim_thompson5910(35256)

Question 158074: 18x/x^2-5x-36 + 2x/x+4
I am not sure how to add rational equations. I was told to take the number that is largest and use it as the common denominator. Does the largest number have to have a variable with it? Please show me how to work this out. Thanks so much!
Click here to see answer by Earlsdon(6294)

Question 158070: a passenger train's speed is 60 mi/h, and a freight train's speed is 40 mi/h. the passenger train travels the same distance in 1.5 h less time than the freight train. How long does each train take to make the trip?

Click here to see answer by mangopeeler07(462)

Question 158118: find the equation of the axis of symetry and the coordinates of the vertex of each quadratic function problem 1: g(x)= 2x squared - 12x+6
Click here to see answer by jim_thompson5910(35256)

Question 158154: x=1 y=3
x=2 y=9
x=3 y=27
x=4 y=81
find a formula relating x and y
Click here to see answer by Earlsdon(6294)

Question 158170: Seven times the difference of 7 and a number gives 70. Find the number.
A.)-3 B.)3 C.)21 D.)-21
I think the number is 21 but i'm not sure. I've tried writing it ou as
7(7)+x=70
What i'm having trouble with is what does the differenc eof seven mean?
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, 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, 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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, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580