Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 281395: whats the value of k for the perfect square y2+6y+k
Click here to see answer by richwmiller(17219)

Question 281450: I am having trouble with this question can some one please help me

I opened up a savings account today at Carthage Federal Savings and Loan with $800.00. If the yearly interest rate of 4% is compounded each month, how much interest will I earn in six months?
Thank you for your help in advance.

Click here to see answer by stanbon(75887)

Question 281525: A discount store sold plastic cups for $3.50 each and ceramic cups for $4 each. If 400 cups were sold for a total of $1458, how many cups of each type were sold? What was the dollar value of each type of cup sold?

Click here to see answer by JBarnum(2146)

Question 281609: The ordered pairs are for a direct variation. Find the missing value. I know that the direct variation form is y=kx but I'm not sure how to use it to find the missing value of the ordered pair.
(-2,8) and (x,12)
Click here to see answer by jim_thompson5910(35256)

Question 281644: b^2-a^2/a-b multiplied by a/a^2-ab
Click here to see answer by jim_thompson5910(35256)

Question 281673: 6x+10=10
Click here to see answer by jim_thompson5910(35256)

Question 281966: y= 6x^2
determine what the y value is for the below x-values
x y
-2,

Click here to see answer by richwmiller(17219)

Question 281976: -8m^3-40m^2 factor out the opposite of the gcf
Click here to see answer by richwmiller(17219)

Question 281949: blake has a total of $1600 to invest in two accounts. One account earns 2% simple interest, and the othr account earns 9% simple interest. How much should be invested in both accounts to earn exactly $102 at the end of one year?
Click here to see answer by brucewill(101)

Question 282037: Hi, my son and I are stuck on his homework. He has done all the sheet except 4 similar questions. Please can I give you an example.....Q. Think of a number, add on 3,multiply it by 2, subtract 2, divide by 2, subtract your first number. What is your answer?
If you can help we would be very grateful.
Thank you.
Click here to see answer by Edwin McCravy(20055)

Question 282175: the difference between two numbers is 25. the larger exceeds 3 times the smaller by 4. find the numbers
Click here to see answer by checkley77(12844)

Question 282180: identify the variable and write an equation that describe the situation. Do Not Solve the equation. Gwen sold her car on consignment for x dollars. The saleswoman's commission was 10% of the selling price and Gwen received $6,570.

Click here to see answer by richwmiller(17219)

Question 282172: kim started with $4 and saved $2 a week. write an equation the growth of her savings using X and Y as in #12.
Click here to see answer by Alan3354(69443)

Question 282243: Solve:
a) 7x - 10 = 12
b) 3x = 9x - 15
c) 4(x - 9) = (x - 5) + 9
Click here to see answer by Mathematicians(84)

Question 282265: 3x+2x=45
Click here to see answer by rfer(16322)

Question 282256: How do I solve for substitution?
x=3y-14
x=4y-9
Click here to see answer by nyc_function(2741)

Question 282330: Write a formula that expresses the relationship described. y varies directly as x and y = 6 when x = -9.
Click here to see answer by solver91311(24713)

Question 282483: Help...
A sailboat travels 20 miles downstream in 4 hours. It returns in 5 hours. Find the speed of the sailboat in still water and the rate of the current.
Ugggg
Thanks
Click here to see answer by Alan3354(69443)

Question 282618: 3x - 6y = -3 and 2x + 4y = 30
Click here to see answer by jim_thompson5910(35256)

Question 282796: f(x) = (4x+6)
f (2) and f(8)

Click here to see answer by checkley77(12844)

Question 282893: Solve by the substitution method:
7y - x = 32
x = 3y
Click here to see answer by user_dude2008(1862)

Question 282881: solve x-6=√(6x+4) please help me work out this problem.
Click here to see answer by user_dude2008(1862)

Question 282878: solve 5y-8+y=9y+23-6y I am stuck on this question any help would be greatly appreciated.
Click here to see answer by user_dude2008(1862)

Question 282876: remove the parentheses and simplify 3x-2-(5x-8) I am stuck on this question any help would be greatly appreciated.
Click here to see answer by user_dude2008(1862)

Question 282875: collect like terms -5y+6x+4+y-3x-7 I am stuck on the question any help would be greatly appreciated!!
Click here to see answer by user_dude2008(1862)

Question 282859: Solve.
a) 3x + 15 = 9
b) x/4 - 6 = 1
c) 9x - 2 = 13
Click here to see answer by user_dude2008(1862)

Question 282022: x-15=-8
w-3=24
x-9=-20
15=r-6
Click here to see answer by user_dude2008(1862)

Question 282338: Find the smallest number, n, such that n/2 is a perfect square and n/3 is a perfect cube.
Click here to see answer by user_dude2008(1862)

Question 282874: calculate 120-3^3∙4�6+7 I am stuck on this question any help would be greatly appreciated!!
Click here to see answer by Deina(147)

Question 282908: How do you solve equations using the Balancing Method?
Click here to see answer by nyc_function(2741)

Question 283015: Please help me solve this equation: 1-3c=9c+7
Click here to see answer by sparks211a(3)

Question 283015: Please help me solve this equation: 1-3c=9c+7
Click here to see answer by unlockmath(1688)

Question 283015: Please help me solve this equation: 1-3c=9c+7
Click here to see answer by Alan3354(69443)

Question 283164:
Click here to see answer by richwmiller(17219)

Question 283209: Solve for y

4(5y + 3) = 3(2y - 5)

Click here to see answer by jim_thompson5910(35256)

Question 283497: 7-2(3x+1)=10-x
Click here to see answer by jim_thompson5910(35256)

Question 283557: On this problem of 5/9 -32/9 subtract,(please note 32/9 is a negative number) I came up with 5/9 +32/9= 37/9. Is this correct? Please advise. Thank you.
Click here to see answer by checkley77(12844)

Question 283598: 7x+3=31 how do i solve this problem
Click here to see answer by jim_thompson5910(35256)

Question 283614: 13(x-4)= -6-7
Click here to see answer by jim_thompson5910(35256)

Question 283647: Please help me solve this eqaution. 6a = 26 + 4a
Click here to see answer by JenniferTutors(83)

Question 283679: Please help me solve this: n - 14 = 3n i have already tried to work on it with: 14 = 3n + n... 14=4n and thats where I stopped
Click here to see answer by jim_thompson5910(35256)

Question 283658: Perform the indicated operations and simplify your answer.
a) (5x - y) + (4x + 7)
b) (x^3 + x^2 - 10x - 6) - (x - 3)
c) (-4x^3)^2
d) 8x(x - 2)
e) (5x - 3)(4x - 7)
f) (p^3 + 3)^2
g) (x^2 + 5)(x^2 + 4)
h) (6y - 1)(5y + 1)
Click here to see answer by papugai(18)

Question 283872: find an equation of the line with the given slope and containing the given point. express your answer in slope-intercept form. m = -2, (-5, -5)
Click here to see answer by Alan3354(69443)

Question 283871: m = 1/2, y-intercept (0,1) write the equation of the line in standard form Ax + By = C.
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, 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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, 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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