Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 732072: Subtract the sum of 2P+ 20 and 8p+7 from 7P + 2.
Click here to see answer by rfer(16322)

Question 732043: how many joules of electrical energy are required to run a 5 watt radio for 30 minutes?(Hint:Pxt,P=watts of power,t=seconds of time)
Click here to see answer by Alan3354(69443)

Question 732052: A construction worker drops a hammer from the height of 50 feet. After how many seconds will the hammer land on the ground? Round your answer to the nearest hundredth.
A) 0.63 sec
B) 1.77 sec
C) 2.00 sec
D) 5.00 sec
Click here to see answer by josmiceli(19441)

Question 732091: The sum of three angles is 120 degrees. The second angle is 5 degrees more than the first. The third angle is three times the second angle. Find the measure of each angle.
Click here to see answer by rfer(16322)

Question 732087: what do you think are the top 5 algebra equations?i need it for a poster for school which says just to write down what i think are the top 5. I'm thinking they are quadratic formula, point slope form, and slope intercept, but I need two more. Please help!!!!
Click here to see answer by lynnlo(4176)

Question 731926: solve for x, -2=-1/4(-4x+8)-1/6x-3+1/12-1/4x
Click here to see answer by lynnlo(4176)

Question 731863: solve for r; (4/r^2-1)-(1/4)=(1/r+1)
Click here to see answer by lynnlo(4176)

Question 732178: Given n=74 and x=32. Find ^ and ^
p q
Click here to see answer by lynnlo(4176)

Question 732220: How much water does it take to completely fill a pool that is 40 m long, 25 m wide, and 2 m deep?
m3
Click here to see answer by lynnlo(4176)

Question 732238: Using the variable x, translate the sentence into an equation. Then Solve the equation.
If a number increased by fifteen and then divided by four the result is 5.
The algebraic expression is ?
The number is ?
Click here to see answer by Alan3354(69443)

Question 732265: please show me the steps in putting this equation into slope-intercpt form: 8x = 5-2y. Thanks
Click here to see answer by MathLover1(20849)

Question 732272:
Tony had $9000 to invest. He invested some an account paying 8.5% simple interest and the remainder in an account paying 11% simple interest. If his total interest at the end of one year was $840, find the amount he invested in each account.
Click here to see answer by checkley79(3341)

Question 732286: Find x in the following
x=1/y+1/z
Click here to see answer by Alan3354(69443)

Question 732357: 5.17 x 10^14 hz x 5.8 x 10^-7
Click here to see answer by Alan3354(69443)

Question 732393: what is the equation 2x +2y =
Click here to see answer by Alan3354(69443)

Question 732599: Complete the ordered pair (-4, ) so that it is a solution to the equation:
y = - x + 1

Click here to see answer by solver91311(24713)

Question 730213: (3X+4)(2x-5)
Solution:
3x(2x-5)+4(2x-5)
6x^2-15x+8x-20
6x^2-7x-20 Answer!
Click here to see answer by SaimaHaroon(4)

Question 732658: a motor requires 8000 joules of electrical energy to move an object 15 meters while applying a constant force of 400 newtons.
(A)determine the work dome by the motorshow work

(B)determine the efficiency of the motor show work
Click here to see answer by solver91311(24713)

Question 732656: an air conditioner draws 5 amperes from a 120-v outlet. At 10 cents per kwh,what is the cost of 5 hours of cooling show work
Click here to see answer by solver91311(24713)

Question 732661: Factor -3x^2+26x-16
Solve quadratic equation z^2-3z-10=0 by factoring
Solve quadratic equation x^2-7x=10=0 by factoring
Factor 2x^2+7x+6
Factor the trinomial 42n^2-n-30
Factor the polynomial 30x^3+22^2+4x completely
Factor trinomial a^2+14a+48
Factor 3x^2+2x-8
Factor x^2+101x+100

Factor Trinomial r^2+r-20
Factor x^2+20x+36 check the original polynomial and the factored form have the same values for x=0,1,2,3&4
Solve 8x=x^2-9 by using quadratic formula
Solve for the quadratic equation x^2+2x-8=0
Click here to see answer by solver91311(24713)

Question 732671: Find all solutions to the equation.
cos x = -1/2
Click here to see answer by KMST(5328)

Question 732855: For some reason im really struggling with the equation (a-2)/3=(1-a)/2, could you possibly explain how i would work this out, thankyou
Emma
Click here to see answer by mananth(16946)

Question 732909: how to solve this problems
1. -5|3+4k|=115
2. -16+5n=-7(-6+8n)+3
3. 3-|8x-6|=3
4. 6|1-5x|-9=57
5. 3|3-5r|-3=18
6. -5|9-5n|-7=30
Click here to see answer by solver91311(24713)

Question 732924: Can you help me solve this problems below step by step?
1. -5|3+4k|=115
2. -16+5n=-7(-6+8n)+3
3. 3-|8x-6|=3
4. 6|1-5x|-9=57
5. 3|3-5r|-3=18
6. -5|9-5n|-7=38
Click here to see answer by solver91311(24713)

Question 732914: how to solve this problems below step by step?
1. -5|3+4k|=115
2. -16+5n=-7(-6+8n)+3
3. 3-|8x-6|=3
4. 6|1-5x|-9=57
5. 3|3-5r|-3=18
6. -5|9-5n|-7=30
Click here to see answer by solver91311(24713)

Question 732934: how to solve this problem:
-5|3+4k|=115
Click here to see answer by solver91311(24713)

Question 732942: how to solve problem
-5|9-5n|-7=38
Click here to see answer by solver91311(24713)

Question 732941: solve step by step
5. 3|3-5r|-3=18

Click here to see answer by Edwin McCravy(20054)

Question 732940: how to solve this equation 6|1-5x|-9=57
Click here to see answer by lynnlo(4176)

Question 732940: how to solve this equation 6|1-5x|-9=57
Click here to see answer by solver91311(24713)

Question 732965: What is the solution to the problem 8-3(x-4)=4

Click here to see answer by trmbneprson(1)

Question 732955: solve -16+5n=-7(-6+8n)+3
Click here to see answer by checkley79(3341)

Question 732952: HOW TO SOLVE
-16+5N=-7(-6+8N)+3
Click here to see answer by checkley79(3341)

Question 732938: how to solve this problem:
3-|8x-6|=3

Click here to see answer by unlockmath(1688)

Question 732883: the area of a rectangular carpet is 18m squared. the length of the carpet is 3m longer than the width. how long is the carpet?

Click here to see answer by checkley79(3341)

Question 733043: Consecutive Integers
If abcd are positive consecutive integers then is a+b^2+c^3 is divisible by d?
If it must always be, prove it. (It does not have to be a formal proof, but you cannot just show me a lot of example.)
If it isnt always, show me an example where it isnt.
Click here to see answer by lynnlo(4176)

Question 733033: K squared minus 8K minus 48 equals 0

Click here to see answer by lynnlo(4176)

Question 733066: HI I NEED HELP SOLVING THIS. S/7=7 .... AND ALSO 68+R=80
Click here to see answer by solver91311(24713)

Question 733065: Thirty more than nine times a number is a number quadrupled
Click here to see answer by MathLover1(20849)

Question 733074: The maximum weight for an elevator is 750 kg. 2 occupants enter the elevator, 1 weighs 110lb and the other is 230lb. What is the linear equation and how do I graph it/
Click here to see answer by lynnlo(4176)

Question 733115: I am factoring trinomials. Doing ok with some, but struggling with ones like one below. Can I change the order of the factored numbers?
3x^2 +7 +2. I factor out 3 to 1x3. And 2 to 1x2
Then I (1x + 1) (3x +2). But I cannot get it to work or check out properly. Thank you!
Click here to see answer by MathLover1(20849)

Question 733154: A number decreased by fifteen is four times the number
Click here to see answer by richwmiller(17219)

Question 732953: solve 3-|8x-6|=3
Click here to see answer by lwsshak3(11628)

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