Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 1006187: The sum of three numbers is 119. The second number is twice as big as the first. The third number is twice as big as the second. What are the largest of the three numbers?
Click here to see answer by addingup(3677)

Question 1006273: It takes 3 hours to 4 adults to build a sand castle. It takes 4 hours to 6 children to build the same sand castle. How many hours will it take to 6 adults and 3 children to build a castle?
(I don't know where to start! - thank you)
Click here to see answer by josmiceli(19441)

Question 1006274: Joseph does the laundry in 15 minutes. Mark takes 4 minutes more to do the laundry on his own than when he does it with Joseph. How long does it take when Mark and Joseph do the laundry together?
(I don't know where to start! - thank you!)
Click here to see answer by MathTherapy(10551)

Question 1006272: I do not know how to formulate or resolve this problem: (thank you for your help)
Joseph takes 15 minutes to do the laundry. Mark takes 4 minutes more to do the laundry by himself than when Joseph and Mark do it together. How much time will it take to Joseph and Mark to do the laundry if they do it together?
Click here to see answer by josmiceli(19441)

Question 1006267: Solve the system by substitution. Enter you answer as an ordered pair, or type none or infinite.
x=4y
2x+3y=44
Click here to see answer by sofiyac(983)

Question 1006313: A rail wagon of mass 1.2 tonne has a momentum 4.8 find the force
Click here to see answer by ikleyn(52776)

Question 1006400: Solve the following Compound Inequality. 4x<2 x-10 or -3x<-12
Click here to see answer by josgarithmetic(39616)

Question 1006384: Can you help me with this? Thanks
What is the difference of the product and the sum of real solutions from
a. -11
b. -1
c. 0
d. 1
e. 11
Click here to see answer by ikleyn(52776)

Question 1006383: Can you help me with this? Thanks :)
a, b, c are positive real numbers that satisfy the equation below:
ab + c^2 = 18
a^2 + b^2 = 12
What is the value of a x b x c?
a. 6
b. 8
c. 10
d. 12
e. 24
Click here to see answer by richard1234(7193)

Question 1006430: Simplify the number using the imaginary unit i. Divided by -28

Click here to see answer by Alan3354(69443)

Question 1006567: 2x^4+3x^3-8x^2+3x=0
Click here to see answer by MathLover1(20849)

Question 1006591: Regarding equations with fractions:
Which of the following is equivalent to 1/x-2 divided by 1/x+2?
Algebraically, I flip the denominator and multiply the terms to get x+2/x-2.
But, of course, that's not an answer choice.
The correct answer choice is supposedly 1 + (4/x-2)!
How do I get there?
Would appreciate any help.
Thank you.
Click here to see answer by jim_thompson5910(35256)

Question 1006592: Equations with fractions:
Given the following term k = a+b/a-b, which of the following expresses a in terms of b and k?
The answer choice is a = b(k+1)/k-1.
I'm usually pretty good with these, but I'm not getting this one at all.
My attempt: I cross multiply to get k(a-b) = a + b. I then isolate a on the right to get k(a-b) - b = a. From there, I'm stuck. I don't see any way to get to the answer choice.
Thanks for any help.
Click here to see answer by josgarithmetic(39616)

Question 1006601: Please help me to solve this equation and get the values of 's' :
Click here to see answer by josgarithmetic(39616)

Question 1006749: solve the inequality. write the answer using both set builder notation and interval notation. graph the solution set on a number line. multiply both sides of the inequality by the lcd first to clear fractions.
1/4(2x+3)>1/3(x+3)
Click here to see answer by stanbon(75887)

Question 1006752: A ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is high. The height of the ball is given by the quadratic equation where h is in meters and t is the time in seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the nearest tenth of a second.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1006846: The distance, s(t), in feet traveled by a freely falling object is given by the function s(t)=16t^2 where t is time in seconds. Use this formula to find the time it would take for an object to fall to the ground from a cliff that is 400 feet high.
Click here to see answer by ikleyn(52776)

Question 1006909: Two thirds of a number reduced by 11 is equal to 4 more than a number. Find the number
Click here to see answer by fractalier(6550)

Question 1006926: 4(5y-6)

Click here to see answer by fractalier(6550)

Question 1006977: There are twice as many flute players as there are trumpet players in the band. If there are n flute players, write an algebraic expression to find each day's distance.
Click here to see answer by Alan3354(69443)

Question 1006979: My class has been hitting simplifying down to y=mx+b through equation. For example, 2y+6x=2. However I have hit this question: 19+2x=2y. The teacher has not taught us how to do this and there are no textbooks to reference. Can you send me the answer to 19+2x=2y along with the way to solve it?
Click here to see answer by Alan3354(69443)

Question 1007097: 2=4t-14

Click here to see answer by ikleyn(52776)

Question 1007133: A car rents for 20 dollars a day and 11 cents a mile. If the car is rented for one day only, write a formula for the rental charges in terms of the mileage driven. Graph your equation.
Click here to see answer by fractalier(6550)

Question 1007185: Line 1:y=x-8
A) What is the equation of the line parallel to line 1 which passes through (-1,0)?
B) what is the equation of the line perpendicular to line 1 which passes through (-1,0)?
Click here to see answer by josgarithmetic(39616)

Question 1007383: 1/3 = n + 3/4
Click here to see answer by tiffany222(56)

Question 1007418: I drove 100KM from A to B in 1 hour, and back form B to A in 2 hours. Whats my average speed?*
Click here to see answer by ikleyn(52776)

Question 1007449: Please help me solve this simultaneous Equation : 2x-y = 5
3x- 3y-3/5 =4
Click here to see answer by rothauserc(4718)

Question 1007449: Please help me solve this simultaneous Equation : 2x-y = 5
3x- 3y-3/5 =4
Click here to see answer by Sam2001(1)

Question 1007521: a number is as much greater than 41 as it is less than 163

Click here to see answer by fractalier(6550)

Question 1007523: What are x and y intercepts of the equation -1/2x+3y=-3
Click here to see answer by MathLover1(20849)

Question 1007534: solve ln(x3) + ln(x^4) = 14
Click here to see answer by Alan3354(69443)

Question 1007536: Solve 195=200-5(1.2)^3x-2
Click here to see answer by fractalier(6550)

Question 1007579: 4) It�s a mystery what�s inside this container.
But you won�t look, you�re not a complainer.
Seventeen coins, that is a hint from me to you.
Quarters and dimes, some old and some new.
The total inside is 3.35.
Get busy on this problem, come on look alive.
You are smarter than you think, you�ve got the knowledge
To solve problems like this and then go to college.
Click here to see answer by Alan3354(69443)

Question 1007591: Y+8y= what is the value of (y)

Click here to see answer by fractalier(6550)

Question 1007615: How do I solve the following equation: (3n-6)-(5-3n)=7 ?
Click here to see answer by tiffany222(56)

Question 1007578: 3) In this cup are seventeen quarters and half-dollars.
Finding the solution will produce some hollas!
The question is how many of each coin inside,
That the creative instructor has so graciously supplied.
Five dollars fifty cents doesn�t buy much these days,
But in this cup is where that total lays.
Don�t look inside, that is called cheating
It�s with your intelligence that you are competing
4) It�s a mystery what�s inside this container.
But you won�t look, you�re not a complainer.
Seventeen coins, that is a hint from me to you.
Quarters and dimes, some old and some new.
The total inside is 3.35.
Get busy on this problem, come on look alive.
You are
Click here to see answer by Alan3354(69443)

Question 1007684: Hello. I have a math question for you
Kathryn leaves her home and travels at an average speed of 45 mi./hr. until she reaches her grandmother�s home 180 mi. away. How long does it take her to reach her grandmother�s house?
how would we set this up?
Click here to see answer by stanbon(75887)

Question 1007688: HI!
How do you solve:
Two times the smaller of two consecutive even integers is 18 more than the larger.

Click here to see answer by stanbon(75887)

Question 1007577: 1) Nineteen coins are what�s in this cup.
Better believe me �cause that�s what�s up.
There�s no peeking or you�ll never learn.
Wait �til the end when it�s your turn.
A dollar thirty is the total inside.
That�s the truth, I�ve never lied.
So how many nickels and how many dimes?
Figure it out. I�ve got no more rhymes.
Click here to see answer by fractalier(6550)

Question 1007576: Quarters and nickels, a total of sixteen.
How many of each, without being seen?
The value of two-twenty is right in this cup.
You will find the answer, a certain cheer up.
Make a table, a graph, an equation will do.
Give it a try and learn something new.
It�s a challenge I know, but don�t give up hope.
The answer is obtainable and within your scope.
Click here to see answer by fractalier(6550)

Question 1007713: What is the solution for the exponential equation 9^-x=(1/3)
Click here to see answer by lwsshak3(11628)

Question 1007709: What is the solution for the exponential equation 9^-x=(1/3)
Click here to see answer by jim_thompson5910(35256)

Question 1007745: What is the x value of the solution to this system of equations?
1. 3x+2y=6
2x+y=2
Click here to see answer by Fombitz(32388)

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, 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