Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 887442: I need help solving this equation. Thank you.
(1/9)^x+2 = 27^x-2
Click here to see answer by Alan3354(69443)

Question 887442: I need help solving this equation. Thank you.
(1/9)^x+2 = 27^x-2
Click here to see answer by MathTherapy(10551)

Question 887440: Found this as a reply to a YouTube video:
Solve: x� � 48 = 0
I don't remember anything from school on the steps to solve. But I can see X2 would be 24 which is 48, minus 48=0
The guy who left the comment was trying to show a previous poster how stupid she is by putting this up. And I am the one who doesn't know where to start.
Click here to see answer by nerdybill(7384)

Question 887471: I need help with this problem. I am not sure what the symbol is or means. I have never seen it in any of my math classes. It is suppose to look like a small letter c in fancy script. There is a small curl at the top of the c. What does it mean when asking to solve over this symbol?
Solve over c (fancy script)
x^2 - y^2 = 9
-3 = x - 2y
Click here to see answer by josgarithmetic(39616)

Question 887497: a+(a-3)=(a+4)-(a+1)= can you please show me step by step, I can't seem to figure out what I am doing wrong. Thank you
Click here to see answer by rfer(16322)

Question 887436: I need help simplifying this equation. Thank you.
(x-2)(x^2 + 2x - 3)
Click here to see answer by rfer(16322)

Question 887546: Find local maximal or local minimal for the function -2x^2+4x-1
Click here to see answer by josgarithmetic(39616)

Question 887546: Find local maximal or local minimal for the function -2x^2+4x-1
Click here to see answer by MathTherapy(10551)

Question 887562: What is in simplest form?
Click here to see answer by josgarithmetic(39616)

Question 887674: V= 1/3pie (r +r )^2 + (r + r ) h
Click here to see answer by Alan3354(69443)

Question 887737: Please provide steps.
A father is now 28 years older than his son. 10 years ago the father was 15 times as old as his son. How old is the father now.

You can only provide the equation I can solve for "x"
Click here to see answer by stanbon(75887)

Question 887906: There are 20 children in the cast of a class play, and 8 of the children are boys. Of the boys, 4 have a speaking part in the play, and of the girls, 8 do not have a speaking part in the play. If a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?
a)2/5
b)1/2
c)3/5
d)3/4
Click here to see answer by richwmiller(17219)

Question 887997: Please solve: 1)3x + 4/5 = 7/10
2)x9y6/(x3y2)3 + x5y3/(x3y)2
3)y=4x-7
y=-2x+5

Click here to see answer by Alan3354(69443)

Question 888008: Combine like terms
-9x-3x+7 could you show me how it is done so I
can learn
Click here to see answer by dv2016(7)

Question 888120: Q#1
Find Equations of following lines which
passes through (-12,-9) and parallel to x-axis
Q#2
Find Equations of following lines which
passes through (-12,-9) and parallel to y-axis

Click here to see answer by Alan3354(69443)

Question 888157: i Have an appliance that's final cost is $400 but there is a 8.679% sales tax. What is the before tax amount?
Click here to see answer by Alan3354(69443)

Question 888203: 2(5k+3)-(13k+6+2)
Click here to see answer by jim_thompson5910(35256)

Question 888213: 2x-[3+(x-5)]=6
Click here to see answer by jim_thompson5910(35256)

Question 888199: -3(5y-8)+2(3y+6)
Click here to see answer by rfer(16322)

Question 888202: -2-(3-3p)
Click here to see answer by jim_thompson5910(35256)

Question 888327: 5s=7s+1=2s
Click here to see answer by jim_thompson5910(35256)

Question 888283: the sides of the square are extended to form a rectangle. one side of the square is extended by 5 cm and the other side by 2 cm. the area of the rectangle is 130 cm�. Find the length at the side of the square.

Click here to see answer by rothauserc(4718)

Question 888521: I need help solving. Thank you.
6x + 5y = 2
Click here to see answer by josmiceli(19441)

Question 888524: I need help solving this system. Thank you.
2x - y - z = 1
x + 2y + z = 0
3x - y - 2z = -1
Click here to see answer by richwmiller(17219)

Question 888523: Hello, my name is Casandra. How do you solve for the domain and range of x^2-5? (x^2 is equal to x squared the "2" is the exponent)
Click here to see answer by josmiceli(19441)

Question 888525: I need help solving. Thank you
x^2 - 8x <= -15
Click here to see answer by Edwin McCravy(20054)

Question 888599: 7y + 30 = -8y
Click here to see answer by rfer(16322)

Question 888599: 7y + 30 = -8y
Click here to see answer by jim_thompson5910(35256)

Question 888615:
I know this is easy, but my Professor saysI have an error in combining the "x" terms

combine like terms
-9x - 13x + 7
-22x + 7
Click here to see answer by harpazo(655)

Question 888651: WHAT IS THE ANSWER OF (2X+5) (3X-2) = (6X+4) (X-8)-33
Click here to see answer by rothauserc(4718)

Question 888732: 0.5x^2=0.75x+5
Click here to see answer by LinnW(1048)

Question 888729: solve the equation.
/2s-3/=/s+7/
Also could you please explain steps. I would greatly appreciate it.
Click here to see answer by josgarithmetic(39616)

Question 305056: Expand (4-3sqrt2)^2
(4-3sqrt2)(4-3sqrt2)
By FOIL we have:
(4-3sqrt(2))*(4-3sqrt(2)) =
4*4 - 12*sqrt(2) - 12*sqrt(2) + 3sqrt(2)*3sqrt(2) =
16 - 24*sqrt(2) + 18 =
34 - 24*sqrt(2)

Click here to see answer by Rustleford(1)

Question 888879: (-3x+)(3x+2)
Click here to see answer by Fombitz(32388)

Question 888896: I need help with this equation. Thank you.
log3X 16=2
(3x is lower exponent next to log)
Click here to see answer by Fombitz(32388)

Question 888904: divide, if possible, and check. If a quotient is undefined, state this.
(-4.9)(7.2)/0

Click here to see answer by Theo(13342)

Question 888906: Solve using the Zero Product Property.
x(2-x)(5x-3)= 0
Click here to see answer by Fombitz(32388)

Question 888907: pls help me to answer with solution ; what is the value of k so that the line x+(3k-2)y+10=0 and is parallel to the line x+5y+2=0

Click here to see answer by Fombitz(32388)

Question 888907: pls help me to answer with solution ; what is the value of k so that the line x+(3k-2)y+10=0 and is parallel to the line x+5y+2=0

Click here to see answer by Theo(13342)

Question 888895: I need help with this equation. Thank you.
Write 1-csc^2a/1-sin^2a (division-first equation on top of second equation) in simplest form, using only the sine function and/or the cosine function. Note any restrictions.
Click here to see answer by Theo(13342)

Question 888889: I need help figuring this out. Thank you.
Find all the real values of y such that cos y = -1/2
Click here to see answer by harpazo(655)

Question 888894: I need help with this problem. Thank you.
Use a calculator. Unless otherwise requested, find angle measures to the nearest degree and lengths to the nearest unit.
Find m(B) in /_\ABC(triangle symbol) if m(C)-90�, a=14, and b=13.
Click here to see answer by Fombitz(32388)

Question 888891: I need help figuring this out. Thank you.
Solve 2 sin^2 a-5 sin a-3=0 in the interval 0� <= m(a)< 360�
Click here to see answer by Fombitz(32388)

Question 888993: hello,
i have no idea where to begin with this equation.
solve for the given variable:
(3x+4)/(x-2)=5/6
Click here to see answer by ankor@dixie-net.com(22740)

Question 889044: P+15/P-6 = 4/3
P+15 = 4
____ _
P-6 3
Click here to see answer by josgarithmetic(39616)

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, 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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