Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 302675: The difference of two numbers is 1. Twice the smaller is 11 more than the larger. Find the two numbers.
Click here to see answer by Stitch(352)

Question 302706: Write equations for the vertical and horizontal lines passing through the point (-3,5)
Vertical line:
Horizontal line:
Click here to see answer by jim_thompson5910(28595)

Question 302701: If a number is subtracted from 4 more than twice itself, the result is 11. Find the number.
Click here to see answer by jim_thompson5910(28595)

Question 302723: x/x-3=2/3 solve the following for x

Click here to see answer by stanbon(57361)

Question 302807: what is the value of X in the problem
x+2x+20+3x-40+4x-20=360
Click here to see answer by london maths tutor(243)

Question 302872: 12=5d/6+7
Click here to see answer by london maths tutor(243)

Question 302895: Sean and Laura have the same number of action figures in their collections. Sean has 6 complete sets plus 2 individual figures, and Laura has 3 complete sets plus 20 individual figures. How many figures are in a complete set?
Click here to see answer by solver91311(16897)

Question 303085: The ordered pairs are for a direct variation. Find the missing value. I know that the direct variation form is y=kx but I'm not sure how to use it to find the missing value of the ordered pair.
(3,4) and (9,y)

Click here to see answer by Mathematicians(84)

Question 303124: what was the initial weight ,in pounds, of a person who now weights x pounds and who lost y pounds and the gained 5 pounds ?
a) x + y - 5 b) y – x + 5 c) x + y + 5 d) y – x – 5 e) x – y + 5

Click here to see answer by stanbon(57361)

Question 303182: Solving 2 equations: x-3y=4
(Trying to find x & y) 2x+y=6
Click here to see answer by scott8148(6628)

Question 303289: does the inequality sign change when multiplying and deviding by a negative number? why or why not?
Click here to see answer by Fombitz(13828)

Question 303297: Given f(x)=3x-1 is one to one, find f^-1(x)
Click here to see answer by nyc_function(2733)

Question 303440: a ring is made of metal gold and silver the weights of the metals are in the ratio 8:9. if the weight if the ring is 1/8 of a pund then what are the weights of the silver and gold?
Click here to see answer by mananth(12270)

Question 303472: please solve -36+2w=-8w+w

this is what i have so far
-36+2w=-8w+w
-36+2w=9w
-2w -2w
-36=-11w
-36/-11=3.2 -11w/-11
Click here to see answer by jim_thompson5910(28595)

Question 303485: Please I need help! My question is:
With a head wind , an airplane travels 480 miles in two hours. Returning with a tail wind it takes 1 hour and 30 minutes. Find the airplane's speed and the wind speed.
Click here to see answer by richwmiller(9143)

Question 303656: If you are traveling at a constant speed, the distance you travel is directly proportional to your travel time. Suppose you walk 3 miles in 1 1/2 hours. How far would you walk in 1 hour? How long would it take to walk 5 miles?
I know the equation is y=kx
Click here to see answer by graphmatics(170)

Question 303756: 5th grade equation kit problem is x+3x-x=30
Click here to see answer by london maths tutor(243)

Question 303857: 7c=56
How can I solve this can you please show me step by step so I can do the rest.
Thank you!
Click here to see answer by jim_thompson5910(28595)

Question 303848: I am trying to solve for N where I know (439.2/N)/(643.6/N) = 0.6824. How can I get N?
Click here to see answer by checkley77(12569)

Question 303842: b^4 + 13b^2 + 36 = 0
Click here to see answer by checkley77(12569)

Question 303834: y=3x-2
y=x+2
Thanks! This is one question not two by the way~
Thanks!
Click here to see answer by checkley77(12569)

Question 303935: what is k? 9-(2k-3)=k
Click here to see answer by Stitch(352)

Question 304003: how do i firgure the difference betweeen three times a number and 10 is 17.
Click here to see answer by richwmiller(9143)

Question 303830: Solving Systems of Equations:
y=-2x-6
y=3x+29
I have to solve them and then write the answers for both. This is one question, not two. Thanks! I really need the help and would greatly appreciate it! I'm failing math. :(
Click here to see answer by scott8148(6628)

Question 304052: 9-(2k-3)=k
2(2a+1/2)-3(a-2/3)
Click here to see answer by edjones(7569)

Question 304089: add 3 to x
divide this sum by 4
subtract 2 from this quotient
which of the following is the result obtained by performing the operations described above ?

a (x-5)/4 b (x+1)/4 c (x+3)/2 d (3x –8)/4 e (x+1)/2

Click here to see answer by mananth(12270)

Question 304112: 1. x=-b+
- spuare root b^2 - 4ac
________________________
2a
What does plus on top of the minus sign mean?

2. 5-3(2x-3)

3. x^2 - 6x
________
x^2 - 36

Click here to see answer by Alan3354(30993)

Question 304105: if x = -1 and k > 0, which of the following has the greatest value ?
a 2 kx b 4 kx^2 c 6 kx^3 d 8 kx^4 e 10 kx^5

Click here to see answer by stanbon(57361)

Question 304125: Sorry if this is not the right topic; I don't know enough to identify the type of problem. (x squared minus x minus 6)/(x squared minus4) If you can show steps for solving this, I would be most grateful, thanks!
Click here to see answer by stanbon(57361)

Question 304533: If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if all 3 did the job together
Click here to see answer by mananth(12270)

Question 304537: (-2xsquared +x+6) + (5xsquared - 4x - 2)
Click here to see answer by checkley77(12569)

Question 304482: -9Y+X=-54 what is the y-intercept?
Click here to see answer by checkley77(12569)

Question 304571: a theater sold 480 tickets for a play last night. floors seats sold for $30.00 each and balcomy tickest sold for $24.00 each. the total amount collected for the 480 tickets was $3200.00. how may seats of each type were sold?
Click here to see answer by scott8148(6628)

Question 304574: What is the best classification for the number -0.6666667? Please show how it's done
Click here to see answer by Fombitz(13828)

Question 304681: i need help with equations such as (1/3)y^2+12=5x i dont know what im doing and i have to solve for y. can you please teach me how to solve them !
Click here to see answer by ankor@dixie-net.com(15656)

Question 304735: 4/5*x+9=21 what is x?
Click here to see answer by mananth(12270)

Question 304761: solve for x. 4/5x+9=21
Click here to see answer by TX911(36)

Question 304760: find the real solutions of the equation.
sqrt (3-2x=x
what is the solution set?
Click here to see answer by london maths tutor(243)

Question 304766: if n is less than w and w is 1 more than z, what is the value of n when z = 1?

Click here to see answer by richwmiller(9143)

Question 304794: Can you help solve 23/7 -2+ 1/3+ 7/6
23/7 -2/2 + 1/3 + 7/6
23/7 -2 + 9/6
23/7 - 2/2 +9/6
46/14 - 14/14 + 9/6
32/14 + 9/6
192/84 + 126/84
288/84= 3 33/84 is this correct?
Click here to see answer by richwmiller(9143)

Question 304860: Expand (4-3 square root of 2)^2
Click here to see answer by themathtutor2009(81)

Question 304852: the sum of three integers is on hundred seventy five. The second is ten more than twice the first. The third is three times the second. The smallest number is?
Click here to see answer by checkley77(12569)

Question 304861: Simplify completly 1/x + 1/y /
1/x^2 - 1/y^2
Click here to see answer by themathtutor2009(81)

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, 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