Questions on Algebra: Equations answered by real tutors!

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Question 927183: y=log(x-1)
Click here to see answer by MathLover1(20849)

Question 927191: 1. One integer is 2 more than another. Their product is 35. Find the Integers
2. One integer is 5 less than 4 times another. Their product is 21. Find the integer
3. If 4 is added to the square of an integer the result is 5 less than 10 times that integer. Find the integer
Click here to see answer by TimothyLamb(4379)

Question 927232: factor trinomial below:
-7x^2 + 5x + 12 = 0

Click here to see answer by TimothyLamb(4379)

Question 927240: what equation is this called 10/100=x/188
Click here to see answer by MathLover1(20849)

Question 927302: In eleven years manny will be five times as old as he was nine years ago. How old is he now?
Click here to see answer by TimothyLamb(4379)

Question 927435: 10-2x=4x-6
Click here to see answer by Stitch(470)

Question 927472: 3n-5=
Click here to see answer by Alan3354(69443)

Question 927517: Find all real values of b such that the equation: x^2 + bx + 6b = 0
only has integer roots.

Click here to see answer by MathLover1(20849)

Question 927489: 3/x-4-2/x+2
Click here to see answer by Alan3354(69443)

Question 927694: In 1963, Dr. Martin Luther King Jr. gave his famous "I have a dream" speech with the words "Five score years ago, a great American, in whose symbolic shadow we stand, signed the Emancipation Proclamation." The Emancipation Proclamation was signed by President Abraham Lincoln in 1863.
a. Using the dates given, write and solve an equation that will calculate the number of years in a score.
b. How many score would represent 60 years?
Click here to see answer by Theo(13342)

Question 927767: An executive drove from home at an average speed of 30 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 80 mph. The entire distance was 135 mi. The entire trip took 2 h. Find the distance from the airport to the corporate offices.
Click here to see answer by Hawksfan(61)

Question 927766: After a sailboat had been on the water for 3 h, a change in the wind direction reduced the average speed of the boat by 3 mph. The entire distance sailed was 54 mi. The total time spent sailing was 5 h. How far did the sailboat travel in the first 3 h?
Click here to see answer by stanbon(75887)

Question 927787: how do i check my answer for 3x+5=2x-11 3x2x-11-5 3x-2x-11-5 x=-11-5 x=-16?
Click here to see answer by MathLover1(20849)

Question 927800: Please assist with problem below and show steps. Thank you.
(16b - 2) -5(3b + 2) = -3
Click here to see answer by stanbon(75887)

Question 927888: If m-9=9 and mn=36, find: m+n and m^2-n^2
Click here to see answer by rothauserc(4718)

Question 927896: Two teenagers, Simon and Joe take $85 and $70 respectively for a weekend treat.During this break, Joe spends $5 more than Simon.At the end of the holiday Simon has twice as much money left as Joe.Calculate how much money each boy spent.
Click here to see answer by Techpriest(29)

Question 927918: What's the answer too 4X+2-3X=28?
Click here to see answer by TimothyLamb(4379)

Question 927920: Hi..I suck ASS when it comes to math! So Please help me with the following
-2(-x+8)+3(2x+1)=131
3(x-2)=6
5(x-2)=115
-2x+5-3x=-90
2x-24=34
-3x-18=-x-44
46-3x=-23
3x-16.8=34.2
2x-3.5=16.5
Whoever answer this you the real MVP and need to hmu so you can help me one on one!!

Click here to see answer by Alan3354(69443)

Question 928042: I am trying to solve this equation for c
a (b-c) = a/b
So far I have got to
ab-ac=a/b
ab=a/b+ac
ab-a/b=ac
But now I am stuck. Please help! Do I divide each side by a? How?
Click here to see answer by Alan3354(69443)

Question 928045: the number of legislators has increased approximately linearly from 1131 positions in 2002 to 1257 positions in 2009. Let n be the number of legislators at t years since 2000. Find an equation of a linear model to describe the data.
Click here to see answer by TimothyLamb(4379)

Question 928047: the number of legislators has increased approximately linearly from 1137 positions in 2004 to 1265 positions in 2012. Let n be the number of legislators at t years since 2000. Find an equation of a linear model to describe the data.
Click here to see answer by TimothyLamb(4379)

Question 928310: If X units of a product costs C dollars to manufacture and earn revenue of R dollars, the value of X where the expression for C an R is called break- even quantity, the number of units that produce zero profit. Find the break even quantity when C = 16x+20000, and R= 18x.
How many units must be produced and sold to break even?
Click here to see answer by TimothyLamb(4379)

Question 928386: Sam makes $400 per week plus a $20 commission on each insurance policy he sells. Write and solve an equation to determine how many policies he sold to earn $680 in one week.
Click here to see answer by TimothyLamb(4379)

Question 928393: Sharon's club is selling greeting cards for a fundraiser. They will profit $3 for each box of cards that they sell. They are trying to raise $825 write and solve an equation to answer how many boxes of greeting cards they sold to make a profit of $825
Click here to see answer by TimothyLamb(4379)

Question 928397: Please help to solve the following:
3/8x = 1

Click here to see answer by MathLover1(20849)

Question 928458: 3y+2=7
3y+2=7-2
3y=5
y=5/3 or 1 2/3
Click here to see answer by qrowenthequeen(3)

Question 928464: 3x+5=5x+2
5-2=5x-3x
3=x
Click here to see answer by qrowenthequeen(3)

Question 928497: please show me how to do this problem use the formula y =20/x to find y when x =10
Click here to see answer by TimothyLamb(4379)

Question 928560: Divide Rs 300 between hena and rina in such a way that rina gets Rs 100 less than 3 times of what hena gets?

Click here to see answer by TimothyLamb(4379)

Question 928748: 3 x 10 - 6 = 10 + 10 + 10 - x

Click here to see answer by ewatrrr(24785)

Question 928881: Identify solutions to systems of equations:
-2x-4y=1
12y=-6x-3
Click here to see answer by ewatrrr(24785)

Question 928907: 5(x+7)^2=5
Click here to see answer by MathLover1(20849)

Question 928940: Solve this equation and show algebraic steps for work please.
y+7/8=2 2/3
Click here to see answer by Fombitz(32388)

Question 928938: What is k-8 3/4=4 5/6
Click here to see answer by ewatrrr(24785)

Question 929050: 3/8 v=24 show algebraic steps
Click here to see answer by Alan3354(69443)

Question 929041: 3n - m/2 + 5 = 8n
Solve for n.
Click here to see answer by TimothyLamb(4379)

Question 929098: The approximate number of tourists in South America is 40.3million and its average rate of change is an increase of 0.8million per year.Also the approximate number of tourists in the middle East is 17.0million and its average rate of change is an increase of 1.8million per year. A-Define the variables and write an equation for each regions tourism rate.
B-If the trends continue, in how many years would you expect the number of tourists in the regions be equal
Click here to see answer by Rongtian(7)

Question 923179: How do I solve 3y+3x=3 and 2y+6x=2 by substitution?
Click here to see answer by Rongtian(7)

Question 923179: How do I solve 3y+3x=3 and 2y+6x=2 by substitution?
Click here to see answer by MathTherapy(10551)

Question 929046: 1/5 d solve the equation and show algebraic steps please and thank you
Click here to see answer by Fombitz(32388)

Question 929343: what is the slope and y intercept of y = 3.5x
Click here to see answer by ewatrrr(24785)

Question 929736:
Is the equation in direct variation? If not, explain why. If so, what is the constant of variation?
9x + 5y = 0
Click here to see answer by MathLover1(20849)

Question 929739: Is the equation in direct variation? If not, explain why. If so, what is the constant of variation?
y = 5x
Click here to see answer by stanbon(75887)

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, 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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, 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