Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 43608: What if an equation had three variables?
Click here to see answer by stanbon(57222)

Question 43653: I need help on the following: Find the solutions to the equation: x^2+2x+5=0. Thanks!
Click here to see answer by tutorcecilia(2152)

Question 43669: Does anyone know:
Is 12 a solution to the equation 19 - x = 7?

Click here to see answer by checkley71(8403)

Question 43669: Does anyone know:
Is 12 a solution to the equation 19 - x = 7?

Click here to see answer by Nate(3500)

Question 43672: I can not do this problem, and anyone help me please?

Solve the following system by graphing:
3x - 6y = 9
x - 2y = 3
In EQUATION2 show:y-intercept as an ordered pair =>
x-intercept as an ordered pair =>
What is the solution for this system?

What type of system is this?
Click here to see answer by checkley71(8403)

Question 43661: Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)
for t
Click here to see answer by psbhowmick(529)

Question 43661: Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)
for t
Click here to see answer by Nate(3500)

Question 43706: Hi,
I have 1/T = 0.00263
how do I find T? I don't remember the rule and can't find it anywhere!
thanks,
Kevin
Click here to see answer by jake_6233(74)

Question 43729: 14.
The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.

A) 8 in. B) 9 in. C) 10 in. D) 7 in.

Click here to see answer by Nate(3500)

Question 43728: 13.
One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.

A) 34 B) 17 C) 5 D) 7

Click here to see answer by Nate(3500)

Question 43733: 17.
Solve the system by graphing.
3x + y = –1
9x + 3y = –3

Click here to see answer by aaaaaaaa(138)

Question 43736: can you help me to solve for x in terms of y and solve for y in terms of x for the following equation.
3y^2+4xy-9y^2=-1
Email - acrown1@umbc.edu
Click here to see answer by stanbon(57222)

Question 43724: 10.
Adult tickets for a play cost $11 and child tickets cost $10. If there were 23 people at a performance and the theater collected $246 from ticket sales, how many children attended the play?

A) 8 children B) 16 children C) 7 children D) 6 children

Click here to see answer by aaaaaaaa(138)

Question 43720: 7.
Rewrite the equation 4x – 6y = –30 as a function of x.

Click here to see answer by aaaaaaaa(138)

Question 43739: solve: 2x=7x-10
Click here to see answer by mbarugel(146)

Question 43786: where did algebra get its name

Click here to see answer by Nate(3500)

Question 43807: what is the x-intercept of:
3x+4y=12?
I put the equation into standard form, but i dont know where to go from there...
Standard: y=-.75x+3
(y=mx+b)
Click here to see answer by Nate(3500)

Question 43847:
Tell how many solutions the system has. Do not actually solve.
2x - y = 5
-4x + 2y = -18
Click here to see answer by checkley71(8403)

Question 43925: Decide whether or not each equation has a circle as its graph. If it does give the center and the radius.
x^2+8x+y^2-6y+16=0
acrown1@umbc.edu
Click here to see answer by fractalier(2101)

Question 43922: Please solve the following by factoring: x^-4x-5=0

Click here to see answer by tutorcecilia(2152)

Question 43849: Solve the system by substitution.
x + y = -7
x - y = 13
Click here to see answer by adamchapman(301)

Question 43849: Solve the system by substitution.
x + y = -7
x - y = 13
Click here to see answer by fractalier(2101)

Question 43848: Solve the system by elimination. If the system is inconsistent or has dependent equations, say so.
-7x + 5y = -20
-3x - 2y = 8
Click here to see answer by fractalier(2101)

Question 43967: Decide whether or not each equation has a circle as its graph. If it does give
the center and the radius.
x^2+8x+y^2-6y+16=0
Click here to see answer by fractalier(2101)

Question 43972: 3R-2=-9+2R
Click here to see answer by adamchapman(301)

Question 43971: HELP WITH THIS PLEASE
10Y-22=8Y-14=
Click here to see answer by adamchapman(301)

Question 43971: HELP WITH THIS PLEASE
10Y-22=8Y-14=
Click here to see answer by jake_6233(74)

Question 43984: Please help with the following. Last one i promise. thanks in advance
Find all solutions of the equation.
9x^3 - 24x^3 + 16x^2 = 0
thanks

Click here to see answer by adamchapman(301)

Question 43983: Please help with the following:
Find all solutions of the equation.
x^6 - 64 = 0
thank you
Click here to see answer by jake_6233(74)

Question 43983: Please help with the following:
Find all solutions of the equation.
x^6 - 64 = 0
thank you
Click here to see answer by adamchapman(301)

Question 43981: Please help with this:
Use the Quadratic Formula to solve the quadratic equation.
x^2 - 2x + 2 = 0
thank you
Click here to see answer by adamchapman(301)

Question 43982: Please help with this.
Use the Quadratic Formula to solve the quadratic equation.
7/8x^2 - 3/4x + 5/16 = 0
thank you
Click here to see answer by adamchapman(301)

Question 43965: can you help me to solve for x in terms of y and solve for y in terms of x for the
following equation.
3y^2+4xy-9x^2=-1
acrown1@umbc.edu
Click here to see answer by adamchapman(301)

Question 44042: graph the inequality y is greater than or equal to 1
Click here to see answer by Nate(3500)

Question 44044: find the slope of any line parallel to the line through points (15,1) and (4,2)
Click here to see answer by venugopalramana(3286)

Question 44059: solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
10x+2y=7
y=-5x+3
Click here to see answer by venugopalramana(3286)

Question 44057: solve each of the following systmes by substitution.
4x-12y=5
-x+3y=-1
Click here to see answer by venugopalramana(3286)

Question 44056: solve each of the following systems by sustitution.
8x-4y=16
y=2x-4
Click here to see answer by venugopalramana(3286)

Question 44055: solve each of the follwing systems by substitution.
5x-2y=-5
y-5x=3
Click here to see answer by venugopalramana(3286)

Question 44052: slove each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
x+5y=10
-2x-10y=-20
Click here to see answer by venugopalramana(3286)

Question 44051: Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
2x+3y=1
5x+3y=16
Click here to see answer by venugopalramana(3286)

Question 44050: solve each of the following systems by graphing
3x-6y=9
x-2y=3
Click here to see answer by venugopalramana(3286)

Question 44049: solve each of the following systems by graphing
x-2y=8
3x-2y=12
Click here to see answer by venugopalramana(3286)

Question 44061: solve the following problem, be sure to show the equation used for the solution.
The lenght of a rectangle is 2in. more than twice its width. if the perimeter of the retangle is 34 in., find the dimensions of the rectangle.
Click here to see answer by venugopalramana(3286)

Question 44054: A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100lb. of a mixture that will sell for $11.25 per pound. How many of each type of bean should be used in the mixture?
Click here to see answer by venugopalramana(3286)

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