Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 229671: Two cyclists begin traveling in the same direction on the same bike path. One travels at 15 mph, and the other travels at 12 mph. When will the cyclists be 10 miles apart?
Click here to see answer by rfer(12660)

Question 229673: Two trains leave Chicago, one traveling east @ 30 mph and one traveling west @ 40 mph. When will the trains be 210 miles apart? Answer 3 hrs., but how do you set up the problem?
Click here to see answer by rfer(12660)

Question 229693: find the area of the region between the graph of
y = x^3 and the x-axis from x = 1 to x = 4
Click here to see answer by solver91311(16885)

Question 229645: Ok I'm not exactly sure what category this goes under, but we learned how to identify "Sub-problems" which is basically a problem that you have to solve from a bigger problem. Confusing? I know. But this is the question I was stuck on.
"Five housemates held a party. They agreed to share the expenses equally. Leroy spent $20 on soft drinks. Alex spent $5 on paper plates. Kulwinder spent $13 on decorations. Max spent $16 on snacks. Bobbi spent $8 on envelopes and paper to send out invitations, and she also spent $7.40 on postage stamps. Who owes money to whom?"
Basically I'm stuck on how to find the "Sub-problems" or how to go about solving the problem. If anyone knows how to do so then I would appreciate it a lot! Thank you so much in advance!!
Click here to see answer by ankor@dixie-net.com(15652)

Question 229708: Henry makes and sells his picture frames on a website. Each picture frame costs $8 to make and he sells it for $20. how much profit does he make if he sells 50 fames?
Click here to see answer by rfer(12660)

Question 229736: did i solve this correctly? 5x+2y=7x-14, step one 5x+2y-5x = 7x-14-5x, step two 2y = 2x-14, step three 2y/2 = 2x-14/2, step four y=x-7 as answer?

Click here to see answer by Alan3354(30993)

Question 229754: find the magnitude of AB(line above) from A(2,3,5) to B(-1,0,4)
Click here to see answer by Alan3354(30993)

Question 229753: solve e^sqrt(x) = 4
Click here to see answer by Alan3354(30993)

Question 229757: find the fifth term in the binomial expansion of (2x - y)^6
Click here to see answer by Edwin McCravy(8909)

Question 229669: An express train travels 90 km per hour from A to B. A local train takes 2.5 hours longer to travel the same distance at 50 km per hour. How far apart are A and B? I know the answer is 281.25 but how is the problem set up?
Click here to see answer by ankor@dixie-net.com(15652)

Question 229775: Please help me solve this problem.
Elenore Morales traveled 1600 miles by commercial jet from Kansas City, Missouri, to Spokane, Washington. She then traveled an additional 500 miles on a private propeller plane from Spokane to Billings, Montana. If the speed of the jet was 4 times the speed of the propeller plane and the total time in the air was 6 hours, determine the speed of each plane.
I do not understand how to set up the equation.
Click here to see answer by ankor@dixie-net.com(15652)

Question 229783: 23- 7(x+3) +5x=10
For my son's homework and i am stuck.
Click here to see answer by checkley77(12569)

Question 229783: 23- 7(x+3) +5x=10
For my son's homework and i am stuck.
Click here to see answer by ly12603(44)

Question 229786: write an equation of the cosine function with amplitude 2, period pi,and phase shift pi/4.
Click here to see answer by Edwin McCravy(8909)

Question 229806: find the rectangular coordinates of the point whose polar coordinates are (20,140 degrees).round to the nearest hundredth.
Click here to see answer by solver91311(16885)

Question 229835: Write an equation of the line that passes through the given point B and has the given slope.

P(0,2), m = 0
Click here to see answer by stanbon(57347)

Question 229820: use mathematical induction to prove that
1^2 + 2^2 + 3^2 +...+ n^2 = n(n+1)(2n+1)/6
for all positive integral values of n
Click here to see answer by solver91311(16885)

Question 229849: -10=1/2x+x
Click here to see answer by rfer(12660)

Question 229842: simplify 9-4r-7
Click here to see answer by rfer(12660)

Question 229867: Please factor the following expression:
x^2-48x-100 (x^2 stands for “x squared”)

Click here to see answer by stanbon(57347)

Question 229880: y+3/6=4/3
Click here to see answer by rfer(12660)

Question 229940: show me how you work this equation 18+4(3x-7)=-70
Click here to see answer by stanbon(57347)

Question 230000: I am having trouble finding out what x is in this equation
1/2(x-6)-2
Click here to see answer by rfer(12660)

Question 230076: Solve each equation
z
____=6
5 what does z =
Click here to see answer by rapaljer(4667)

Question 230080: 5s+s=78
what does s=
Click here to see answer by rapaljer(4667)

Question 230079: g+(g-32)=126
what does g=
Click here to see answer by rapaljer(4667)

Question 230213: during one year,the cost of tuition,room,and board at a state university increased 5%.if the cost continues to increase at the rate of 5% per year,how long will it take for the cost of tuition,room,and board to double?round your answer to the nearest year.
Click here to see answer by solver91311(16885)

Question 230289: 905=5a

Click here to see answer by themick11(1)

Question 230285: Please help me solve this equation: 9=-4(x+1)-2.
Click here to see answer by mando271(42)

Question 230291: In 2006 the number of Americans who were members of a health club was 42.7 million. This was an increase of 106% from the number of clubs in 1990. How many Americans were health club members in 1990?
Click here to see answer by drj(1380)

Question 230318: please help me on this problem
-64 = -8v
Click here to see answer by checkley77(12569)

Question 230269: (S-C)/C = R

I am trying to solve for C. Can you rearrage the formula so C is on the right side:
ex. some+formula = C
Thanks!!
Click here to see answer by checkley77(12569)

Question 230328: how would you solve.... 7/8 + t = 1/4
Click here to see answer by rfer(12660)

Question 230209: find the area of the region between the graph of y = x^3 and the x-axis from x= 1 to x= 4
Click here to see answer by Alan3354(30993)

Question 230355: Hi I was wondering if someone could help with this problem.
Find the indefinite integral using u substitution for the following:
(4x-11)/(2x^(2)-11x+19) dx (Use u=2x^(2)-11x+19)
Thanks, Judy
Click here to see answer by stanbon(57347)

Question 230381: find an equation of the line containing the given pair of points ( 4,2) (12,8) y= I came up with y= 4 am I close
Click here to see answer by stanbon(57347)

Question 230406: How do I solve this equation, please show steps.
4x - 5(3x + 10) = 126
I've tried distrubuting 5 to 3x and 10 to get 15x + 50. So then my equation is 4x - 15 + 50. So I add 15 to itself crossing it out, then I add it to 50 which is 65. Im stuck on this part I dont know what to do.
Click here to see answer by user_dude2008(1861)

Question 230413: solve the given equation for the variable 9x-2(x+4)=-29
Click here to see answer by PRMath(123)

Question 1758: I'm taking an algebra class for the first time in years and cannot remember how to solve this:i had got this answer x=6.

The answer should be 6 but i can't figure out how to solve. Thanks for any help.
Click here to see answer by 95151(1)

Question 230490: Can you please help me solve 5+2(n+1)=2n
Click here to see answer by stanbon(57347)

Question 230490: Can you please help me solve 5+2(n+1)=2n
Click here to see answer by user_dude2008(1861)

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