Questions on Algebra: Equations answered by real tutors!

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Question 34373: A bricklayer and an electrician together spend 90 hours working on a new house. If the bricklayer earns $12 per hour, the electrician earns $16 an hour, and the owner pays them a total of $1350 for their work, how many hours does each worker spend on the house?
Click here to see answer by hydromojo(20)

Question 34485: Hello! Thank you for your time. I've been trying to solve this for a week now.
Solve: X=51n(7+3y)for y.

The answer is supposed to be:
x
-
e5-7
____
3
This is the same answer without the Division bars
x
e5-7
3

Click here to see answer by mukhopadhyay(490)

Question 34490: Hello! Thank you for your time. I've been trying to solve this for a week now.
Solve for y.
X=51n(7+3y)for y.

Click here to see answer by Earlsdon(6294)

Question 34641: Hello,
Can you please show me how to simplify this? I need to know in steps. (x-2) (2x+3)
Click here to see answer by checkley71(8403)

Question 34639: Hi,
I would appreciate your help simplifying this. Please show me how this is a hard one! 4xy^3/16x^2y
Thank you
Click here to see answer by Earlsdon(6294)

Question 34637: I need some help please x^2-3x=28
Click here to see answer by askmemath(368)

Question 34640: Hi,
Can you please show me how to simplify this? 4x(x-2)-3x(x+4)Please show me in steps.
Thank you so very much.
Click here to see answer by checkley71(8403)

Question 34717: I cant figure out how to solve this equation. 2(2x+9)=-16 Can you please help me?
Click here to see answer by Earlsdon(6294)

Question 34717: I cant figure out how to solve this equation. 2(2x+9)=-16 Can you please help me?
Click here to see answer by priya(51)

Question 34819: solve the equation 7x = 42
Click here to see answer by QueenVoda(11)

Question 34839: slove this inequality
j
- - 8 < 4
4

Click here to see answer by stanbon(75887)

Question 34837: simlify this expresstion -9H-6+12h+40=22

Click here to see answer by mathdumb(3)

Question 34837: simlify this expresstion -9H-6+12h+40=22

Click here to see answer by checkley71(8403)

Question 34836: simlify this expresstion 4p+9+(-7p)+2=

Click here to see answer by checkley71(8403)

Question 34829: simpify and slove this equation 4m+9+5M-12=132

Click here to see answer by checkley71(8403)

Question 34810: A rock falls from a tower that is 53.9 m high. As it is falling, its height is given by the formula h = 53.9 - 4.9t^2. How many seconds will it take for the rock to hit he ground (h=0)? Round to the nearest tenth, if necessary.

A) 7 sec

B) 592.9 sec

C) 7.3 sec

D) 3.3 sec
Click here to see answer by checkley71(8403)

Question 34852: The average distance between the earth and the sun is 93 million miles. Using the velocity of light, find an approximate value for the amount of time that it takes a light ray to travel from the sun to the earth.
I have the velocity of light, its 186,000 miles per second.
I dont really understand how to do this, can someone please help, thanks.
Click here to see answer by stanbon(75887)

Question 34828: slove the equation 12y =132

Click here to see answer by usyim88hk(158)

Question 34822: slove the equation h/9 =7
Click here to see answer by usyim88hk(158)

Question 34866: 6x-2x+11=-5
4/3x-10/3x-11=1
Click here to see answer by checkley71(8403)

Question 34827: slove the equation 4y+228=352

Click here to see answer by usyim88hk(158)

Question 34906: The kindness of your help is appreciated, Thank you!
solve and show work
X+3 - 2 = 4 ******* NOTE (X+3 IS ENCLOSED IN A RADICAL SYMBOL)
***
Click here to see answer by Earlsdon(6294)

Question 34904: Your wonderful help is greatly appreciated! Thanks so very much!
SIMPLIFY
MUST SHOW WORK
x^2 - 49 / x^2 - 2x - 35
Click here to see answer by Earlsdon(6294)

Question 34889: if you hang a cable (like a suspension bridge) between two points, it may look like a parabola but it is not. What is the equation of a cable suspended between two points?
Click here to see answer by Earlsdon(6294)

Question 34913: MUST SHOW WORK!
Solve 5/x-2 - 2/x+2 = 3/x^2-4
I really would appreciate the input of your help!
Click here to see answer by longjonsilver(2297)

Question 34838: slove this inequality 3p-16<20

Click here to see answer by longjonsilver(2297)

Question 34820: slove the inequality 3p-6>21
Click here to see answer by askmemath(368)

Question 34941: Please help me with htis word problem. Thanks again!
Two water pipes can fill a tank with water in six hours. the larger pipe working alone can fill the tank in 9 hours. How long will it take the smaller pipe working alone to fill the tank?
MUST SHOW WORK!
Click here to see answer by mbarugel(146)

Question 34965: 10x-3-2x=4
Click here to see answer by checkley71(8403)

Question 34967: I am having trouble with this equation problem : 2z+4=5z-8
I was taught to isolate the variables,
i.e. 2z+4-4=5z-8-4
2z=5z-4
But sometimes i don't know which part of the question I should isolate first.
Can you explain to me the formula/rule?
Click here to see answer by checkley71(8403)

Question 34969: 4y-3(y+8)=12 can you please show how an tell how to solve
Click here to see answer by checkley71(8403)

Question 34830: slove this equati 80= 3Y+2Y+4+1

Click here to see answer by Fermat(136)

Question 35000: ok,i am in 6hth grade and im struggleing in algebra
ok.example-
x+18=2/12
i dont get the fractions!
and i m failing math!
Click here to see answer by checkley71(8403)

Question 35004: 1. Paula is 6 years old. Her uncle is 4 times as old. How old will Paula be when she is half as old as her uncle?
Please explain and answer.. thanks
Click here to see answer by checkley71(8403)

Question 35002: Using Equations to solve world problems.. Please explain how to solve and the answer..
1. George had 9 times as many stamps in his collection as Daniel has. Bryan has 2 times as many stamps as Daniel. The combined stamp collection of the three boys is 144. How many stamps does each boy have?

I need to Write the equation:
Solve for "n" :
Answer:
Thanks
Click here to see answer by checkley71(8403)

Question 35022: 8b+2b-4=6
Click here to see answer by Prithwis(166)

Question 35023: 2) -n-9+8n=26
3) 5(w-7)=-15
4) m=3(m-4)=16 I NEED THIS QUESTIONS PLEASE
Click here to see answer by stanbon(75887)

Question 35001: Please explain to me the proper way of solving this problem.
Could you please include the answer also?
1) Christina has $22.00 more than 3 times as much money as Melissa has. Together they have $122.00. How much money does each girl have?
I need to write the equation :
Solve for "n" :
Answer:
Thanks..
Click here to see answer by stanbon(75887)

Question 35060: find the equation of a straight line perpendicular to a line (5;-2) and (0;5) and through the point (3;-2)
Click here to see answer by venugopalramana(3286)

Question 35057: Please show all work
Add. 3/x + 2 - x/x - 3

Any help would be greatly appreciated. Thank you for the kindness!
Click here to see answer by Prithwis(166)

Question 35116: I am having trouble with this equation: 3x+4=2x-3
I don't know the formula. Where do I start to answer this question?
Thank you for spending your time to help me!
Click here to see answer by checkley71(8403)

Question 35124: As the number of students grew, the school hired more teachers. Write an equation to show the relationship between teachers and students from the chart. S=students
t=teachers
Students 100 200 300 400
Teachers 7 12 17 22
I can see that the number of teachers increases by 5 with every additional 100 students but for the first 100 students there are 7 teachers. I can not figure this out. I know that it has to be simple and I just can not see it. Thanks for the help.
Click here to see answer by kellytn78(2)

Question 34834: slove this equation 3q+11+8q>99

Click here to see answer by kellytn78(2)

Question 35161: I need to simplify this:
10X+4+X-9
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, 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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, 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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