Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 851954: Factor the following trinomial:
-5x^2+2x+16

Click here to see answer by MathTherapy(10551)

Question 851996: Need help solving this equation.

Click here to see answer by MathTherapy(10551)

Question 851953: Factor the following trinomial:
12k^3q^4-4k^2q^5-kg^6
Click here to see answer by Seutip(231)

Question 852070: for what value of k will (2x-y) equal 6x-3y for all values of x and y
Click here to see answer by Edwin McCravy(20054)

Question 851777: 5+4x=4x
Click here to see answer by Fombitz(32388)

Question 852152: Can you help me solve 15= -3(2q - 1) ??? Please!
Click here to see answer by josh_jordan(263)

Question 852164: can someone show me step by step for this problem? Solve 24 - 3x = -27.
Click here to see answer by Fombitz(32388)

Question 852239: what does the point (2,5) represent in x=8(y-5)^2+2
Click here to see answer by ewatrrr(24785)

Question 852239: what does the point (2,5) represent in x=8(y-5)^2+2
Click here to see answer by josh_jordan(263)

Question 852293: five sixths times blank equals twenty-five

Click here to see answer by ewatrrr(24785)

Question 852295: What is greater 15 meters or 20 yards or 675 inches or 1,250 centimeters?
Click here to see answer by Alan3354(69443)

Question 852428: Please explain to me how to solve the following problem i don't understand how the answer is 10
1-(2-(3-(4-5)+6)+7)+8=
Thank you
Click here to see answer by josgarithmetic(39616)

Question 852437: If three fifth's of a number is subtracted from two thirds of a number, the answer is 3. What is the number?
Click here to see answer by JulietG(1812)

Question 852393: 8(3x +1) = ____ + 8
I don't know how to figure this out... Help
Click here to see answer by josgarithmetic(39616)

Question 852485: Write a polynomial equation with roots 2 and -6i.
X^3 - _ x^2 + _ x - _ = 0
This is what I have so far.
(x-2)(x+6i)
(x^2 -2x +6i - 12i)
Click here to see answer by ewatrrr(24785)

Question 852485: Write a polynomial equation with roots 2 and -6i.
X^3 - _ x^2 + _ x - _ = 0
This is what I have so far.
(x-2)(x+6i)
(x^2 -2x +6i - 12i)
Click here to see answer by LinnW(1048)

Question 852495: How would you solve for "x" if

5+3log(x-1)=11
Click here to see answer by Alan3354(69443)

Question 852504: How would you solve for "x" if...

-2e^x+3= -6
Click here to see answer by ewatrrr(24785)

Question 852507: How would you solve for "x" if...

-2e^(x+3)=-6
Click here to see answer by ewatrrr(24785)

Question 852505: How would you solve for "x" if...

ln(x^2-16)= 2ln(3)
Click here to see answer by ewatrrr(24785)

Question 852534: Given that 4-i is the root and {x-(4-i)}is a factor, use algebra (not your calculator) to solve the following equation: x^4-8x^3+19x^2-16x+34=0
Click here to see answer by Edwin McCravy(20054)

Question 852533: age of a mother is thrice of her daughters age.after 10 years it will be twice of the daugherts age. form an equation
Click here to see answer by ewatrrr(24785)

Question 852780: 1)If I invest $x at 8% and $y at 9% my annual income is $430. Had I invested $x at 9% and $y at 9% my annual income would have been $420. Find x and y.
Click here to see answer by stanbon(75887)

Question 852790: 1)If I invest $x at 8% and $y at 9% my annual income is $430. Had I invested $x at 9% and $y at 8% my annual income would have been $420. Find x and y.'
Click here to see answer by ankor@dixie-net.com(22740)

Question 852878: I need to solve this and I am lost. (-y-3x)(-y+3x)
Click here to see answer by jim_thompson5910(35256)

Question 852877: Please help. (8a^2+4)(8a^2-4)
Click here to see answer by jim_thompson5910(35256)

Question 852874: Can you please help me. (3x-7)(3x+7). Thank you
Click here to see answer by Seutip(231)

Question 852875: I need help please. (7u+6v)(7u-6v)
Click here to see answer by Seutip(231)

Question 852872: how do I solve (x+5)(x-5)? Thank you for your help.
Click here to see answer by Seutip(231)

Question 852872: how do I solve (x+5)(x-5)? Thank you for your help.
Click here to see answer by Alan3354(69443)

Question 852873: It has been a long time and I need a refresher course.
Can you help me solve (-6x-7y^2)^2
Click here to see answer by Seutip(231)

Question 853048: Select any two integers between -12 and +12 which will become solutions to a system of two equations.
- The two integers I picked are -4 and 8
Write two equations that have your two integers as solutions. Show how you built the equations using your integers.
- The two equations I picked are 5X-Y=-4 and 6X+4Y=8.
Solve your system of equations by the addition/subtraction method. Make sure you show the necessary 5 steps.
- Both equations in ax + by= c is written as 5x-y=-4 and 6x+4y=8.
Step 1: Write both equations in the form ax + by = c
Step 2: Multiply the second equation by 2 in order to make the coefficients of the x terms equal.
Step 3: Subtract the second equation from the first equation to eliminate the x variable.
Solve the equation for y.
Step 5: Select one equation and substitute 4 for y and solve for x.
The solution set are?
Please help with this.
Click here to see answer by richwmiller(17219)

Question 853072: Determine the interest rate necessary for $1500 to amount to $2075 in 6 years with interest compounded semi-annually
Click here to see answer by ewatrrr(24785)

Question 853365: Find x in 2x+9y-4=0
Click here to see answer by richard1234(7193)

Question 853624: explain 6!/4!=
Click here to see answer by richard1234(7193)

Question 853755: 3x-(x-1)=1-(3x-9)
Click here to see answer by Fombitz(32388)

Question 853813: Hi I really need help with these questions please. Could someone show their solution too please. Thank you so much.
Solve each of the following equations for x, that is, find all real numbers, x, which satisfy the equation.
1.) 3(x-5)-2(x-4)=2-7(x-1)
2.) (x-2)/a = b
Click here to see answer by LinnW(1048)

Question 853848: What is the equation of the parabola with the vertex (2,4)and foucs (5,4)
Click here to see answer by ewatrrr(24785)

Question 853960: Hey,
Are you able to help me with this question I've tried but can't seem to do it.
Here is a picture of the question
http://gyazo.com/36e0c6eed633115d0e48f7aec728a797
Many thanks.
Click here to see answer by Alan3354(69443)

Question 853972: 1.Solve the linear equation : 2x+y-3z= 5,3 x-2y-2z= 5, and 5x-3y-z= 16.

a.(1 , 3 , -2 )
b.(1 , -3 , 2 )
c.(1 , -3 , -1 )
d.(1 , -3 , -2 )

2.Find z by the use of determinant : 3x-4y+2z+8=0, x+5y-3z+2=0, 5x+3y-z+6=0
a.6
b.7
c.3
d.5

3.Find x by the use of determinant : 3x-4y+2z+8=0, x+5y-3z+2=0, 5x+3y-z+6+0

a.3
b.5
c.2
d.-2
4.Two systems of linear equations involving the same variables are said to be _______ if they have the same solution set.
a.set
b.associative
c.equivalent
d.parallel

5.A + (B + C)= (A + B) + C
a.associative
b.scalar quantity
c.dot product
d.2

6. A + B = B + A
a.associative
b.m
c.commutative
d.m-n

Click here to see answer by Vladdroid(91)

Question 853992: Consider the following system of equations.
y=3x-7
y-3x=5
What can you conclude about the system of equations?
( ) The system of equations is inconsistent.
( ) The system of equations is dependent.
( ) The system of equations is independent.
( ) none of these

Click here to see answer by ewatrrr(24785)

Question 853989: Hey,
Are you able to help me with this math question, I've tried but can't seem to figure the answer.
Any ideas?
Here is the picture of the question as I couldn't write it out in the browser
http://gyazo.com/1070aa9922e91552e7fcf5a50b39faf7
Click here to see answer by ankor@dixie-net.com(22740)

Question 854121: How do I solve
2(n+5) = -2
Click here to see answer by rvfer(117)

Question 854162: Solve for x
(-2 x/7) - 3 = -2(x 7)
a. -21/5
b. 5
c. -3
d. -5
Click here to see answer by chndnbl(31)

Question 854133: he point (2, 1) is a solution to which of the following systems of equations?
2x + y = 5 and −2x + y = 2
−2x − y = −5 and 2x − y = 2
−x + y = 3 and −3x + y = −5
x + y = 3 and 3x − y = 5
Click here to see answer by Alan3354(69443)

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, 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, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 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