Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 70371: Solve:
7x + 7 = 6x
I understand I need to solve for x, but when I do I can not come up with the four answers I have, which are:
6, 7, -7, -6
Can anyone help me with this problem please, thank you
Click here to see answer by funmath(2933)

Question 70366: Find the axis of symmetry:
y = x^2 - x + 10
I can not seem to understand this method, I did look back at some other ones, but felt it confused me even more, help please, thank you!!!
Click here to see answer by stanbon(75887)

Question 70368: Divide:
x^2 + 2x^2 + x + 12
-------------------
x + 3
Can anyone give me a hand on this, it seems to be so confusing to me! Thank you very much
Click here to see answer by bucky(2189)

Question 70376: Simplify:
a
5 - ----
b
---------
15
----
b
It is multiple choice:
A) 5b - 1
-------
15
B) 5b - a
-------
15
C) 5 - a
------
15
D) b - a
------
3
Can anyone help me understand the steps to solving this one please? Thank you very much!!!
Click here to see answer by funmath(2933)

Question 70328: -5(3w-3)+(1+16w)=0
Click here to see answer by funmath(2933)

Question 70381: This equation was right with the numerator and denominator
Divide:
x^3 + 2x^2 + x + 12
--------------------
x + 3
The four answers I can choose from are:
a) x^2 + x + 4
b) x^2 + x - 4
c) x^2 - x - 4
d) x^2 - x - 4
Thank you for your help!
Click here to see answer by stanbon(75887)

Question 70363: Multiply:
1 1
x- -- x+ ---
3 3
I tried to figure this out but can not come up with one of the four answers. Can anyone help me get this please? Thank you so much!
Click here to see answer by funmath(2933)

Question 70400: I really stink at written problems. Could you check to see if my answer is corret. If not, help.
The base of the triangle is 4 inches longer than the length of one of the other sides. Use a system to equations to find the length of each side of the triangle.
x in
x in
Perimeter= 46 in
y in
My answer is x=14 and Y =18
Click here to see answer by checkley75(3666)

Question 70401: Three times one number added to another number is 18. Twice the first number number minus the other number is 12. Find the numbers.
I ahve 5 and 9. Is this correct?
Click here to see answer by checkley75(3666)

Question 70418: Divide;
x^2 + 2x - 15 x^2 - 25
------------- / ---------
4x^2 2x - 10
This problem has lost me on all senses to figure it out, can anyone help me with this one please? Thank you very much
Click here to see answer by checkley75(3666)

Question 70445: A blue spruce grows an average of 6 in per year. A hemlock grows an average of 4 in per year. If a blue spurce is 4 feet tall and a hemlock is 6 feet tall, when would you expect the trees to be the same height?
Help, i hate written problems.
Click here to see answer by checkley75(3666)

Question 70458: 3(8-3t)=5(2+t)
Click here to see answer by checkley75(3666)

Question 70487: (2x � 5)/3 � 3/2 = (x + 4)/5
Solve for x
Click here to see answer by pleasuretohelp(9)

Question 70487: (2x � 5)/3 � 3/2 = (x + 4)/5
Solve for x
Click here to see answer by bucky(2189)

Question 70421: Solve: 5(x-2)^2 = 3
The answers are multiple choice:
a)10 plus,minus sqrt3
-----------------
5
b)plus minus 59/25
c) 1/5, 19/5
d)10 plus, minus sqrt15
--------------------
5
I think the answers have thrown me off on trying to figure this out. I am not sure how sqrt play a role in this, can you help me? Thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 70441: Rewrite the middle term as the sum of two terms and then factor completely:
15x^2 + 17x + 4
I do not understand what they are wanting me to do with this equation, I need some help please, thank you!
Click here to see answer by checkley75(3666)

Question 70439: Write in simplest form:
9 - b^2
------------
b^2 - b - 6
Would the correct answer be:
-b + 3
------
b - 2
Thank you
Click here to see answer by pleasuretohelp(9)

Question 70419: Subtract;
5y^2 + 2y - 9 from 10y^2 + 3y + 5
Do I use the foil method or do I try to combine like terms on this one? Thanks
Click here to see answer by piglet162431(90)

Question 70428: Evaluate (assume x (twolines across with on line through them) 0)
5x^0
A) 5x
B) 0
C) 1
D) 5
Can anyone help me figure this one out, that symbol confused me of what it means, thank you
Click here to see answer by pleasuretohelp(9)

Question 70414: Chapter 3.3 exercises.
#38 1/4(t+10)=5
#18 2/3(x+8)=8
Click here to see answer by ankor@dixie-net.com(22740)

Question 70434: What values for x must be excluded in the following fraction:
x-4 / 1
a)None
b) 0
c) -4
d) 4
I believe the answer is 0 but I am not real sure on this one, thank you for the help!
Click here to see answer by pleasuretohelp(9)

Question 70429: Factor completely:
16x^2 + 24xy + 9y^2
I am trying to figure this out, but can not remember the steps in order to do so, could someone help me out please? Thank you
Click here to see answer by checkley75(3666)

Question 70509: you deposit $600 in a savings account for 3 years. The account pays 8% annual interest compounded quarterly.
a. What is the quartely interest rate?
b. What is the number of payment periods?
c. Find the final balance in the account.
Click here to see answer by stanbon(75887)

Question 70510: How do you solve 7/8 divided by m?
Click here to see answer by checkley75(3666)

Question 70417: Multiply:
3s^2 * 5s^7
Is the answer:
15s^14?? Thank you so much!
Click here to see answer by checkley75(3666)

Question 70415: Is the following binomial a difference of squares:
9a^2 - 8b^2
What does this mean? Thank you!
Click here to see answer by checkley75(3666)

Question 70479:
The solution of the system 4x+5y =2 and 6x-2y=b is (3,a). Find the values of a and b.
Helpp
Click here to see answer by bucky(2189)

Question 70423: Is the following trinomial a perfect square:
x^2 + 4x - 4
I thought trinomials were written in sqrt form, is this not true?? Thank you
Click here to see answer by 303795(602)

Question 70411: Can you please explain problem...instructions...divide.
3y^6z^7*10y^6z^7/5y^6z^6
Click here to see answer by checkley75(3666)

Question 70521: 4 c/min.=____qt/h
convert each rate using dimensional analysis
Click here to see answer by stanbon(75887)

Question 70520: Convert each rate using dimensional analysis
2.5 qt/min=___gal/h
Click here to see answer by stanbon(75887)

Question 70520: Convert each rate using dimensional analysis
2.5 qt/min=___gal/h
Click here to see answer by bucky(2189)

Question 70519: Convert each rate using dimensional analysis
26cm/s=____m/min.
Click here to see answer by stanbon(75887)

Question 70534: Subtract. Write your answer in simplest form:
y-2 y
---- - -----
y+3 2y+6
Here are the four answers I have to choose from:
a) y^2 + y - 12
--------------
(y+3)(2y+6)
b) 3y - 4
---------
2(y+3)
c) y-2
-----
y+3
d) y-4
--------
2(y+3)
I just do not understand how they have come up with one of these answers, thank you for the help!
Click here to see answer by funmath(2933)

Question 70535: Solve: 4(x+2)-3x=x-6
I am not sure what the answer means:
a) 1
b) Identity
c)No solution
d) 0
Can you explain to me what identity means please and help me understand this problem, thank you.
Click here to see answer by stanbon(75887)

Question 70532: Divide x^4 + x^2 - 80
--------------
x + 3
I have four answers but I can not understand this problem of how to come up with one of these answers:
a) x^3 - 3x^2 - 10x + 30 + -10
-----
x + 3
b) x^3 - 3x^2 + 10x + 30 + 10
------
x + 3
c) x^3 - 3x^2 + 10x - 30 + 10
-----
x + 3
d) x^3 - 3x^2 - 10x - 30 + -10
-----
x + 3
Thank you for your help!
Click here to see answer by stanbon(75887)

Question 70437: Divide:
x^4 + x^2 -80
-------------
x + 3
I have some very crazy answers in this one:
a) x^3 - 3x^2 - 10x + 30 + -10/x+3
b) x^3 - 3x^2 + 10x + 30 + 10/x+3
c) x^3 - 3x^2 + 10x - 30 + 10/x+3
d) x^3 - 3x^2 - 10x - 30 + -10/x+3
This problem has lost me and I need some help on trying to solve this one, thank you
Click here to see answer by funmath(2933)

Question 70422: Subtract. Write your answer in simplest form:
y - 2 y
----- - -------
y + 3 2y + 6
Thank you for helping me!
Click here to see answer by funmath(2933)

Question 70546: What is the solution for:
3y-2y-3 = -1
_______
6
Click here to see answer by funmath(2933)

Question 70597: 2t+7=-1 how do i answere the question

Click here to see answer by Earlsdon(6294)

Question 70718: I need help solving the following problem. 12x+131=189+3x
Click here to see answer by checkley75(3666)

Question 70698: Determine the best method to solve each system of equations. Then solve the system.
2x+y=3x-15
x+5=4y+2x
I have (18 1/3, -3 1/2)
Is this correct. Thanks
Click here to see answer by bucky(2189)

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, 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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, 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