Questions on Algebra: Equations answered by real tutors!

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Question 365120: A bicyclist is traveling twice as fast as someone walking. If their combined speed is 21 miles per hour, find the speed of the person walking.
Click here to see answer by ewatrrr(10682)

Question 365172: x/28=2
Click here to see answer by rfer(12662)

Question 365226: Find the slope of the line that passes through (-1,2) and (3,2). explain
Click here to see answer by Alan3354(30993)

Question 365298: Hello, I'm doing some practice problems and checking my work with you. I thought I understood this stuff and then I got a 4 out of 10 on my quiz!
Using synthetic division, give the quotient and remainder:

-3___2___-3___-32___-15
_________-6____27____15
_____2___-9____-5_____0
=
Remainder = 0
Did I do this one correctly? Thanks so much for your help :)
Click here to see answer by jokaehler(26)

Question 365390: 87=n-100
Click here to see answer by Alan3354(30993)

Question 365387: Hello, I'm working on some practice problems and checking my work with you. I thought I understood this material and just got a 4 out of 10 on my quiz! Ouch.
Using the rational zero test, I must find all possible rational roots:

First I identified the constant (-9) and the leading coefficient (3) and then I listed the factors of each:
-9: 1, 3, 9
3: 1, 3
Then I divide all factors of the constant by the factors of the leading coefficient:
, , , , ,
My final answer is , , , and
Thanks in advance for your valuable time! :)
Click here to see answer by Fombitz(13828)

Question 365374: y=3x+-7
Click here to see answer by Fombitz(13828)

Question 365401: A family drove to the Grand Canyon, averaging 45 mph. They returned using the same route, averaging 60 mph. If they spent a total of 7 hours of driving time, how far is their home from the Grand Canyon?
Click here to see answer by mananth(12270)

Question 365340: WHICH PROBLEM SITUATION BEST MATCHES THE EQUATION 2C+10=350?
SITUATION A:AUSTIN PAID $10 FOR A NEW VIDEO GAME CONSOLE.HOW MUCH DOES A USED CONSOLE COST?
SITUATION B:AUSTIN PAID $350 FOR A NEW VIDEO GAME CONSOLE.THIS IS $10 MORE THAN 2 TIMES THE COST OF A USED CONSOLE.HOW MUCH DOES A USED CONSOLE COST?

Click here to see answer by mananth(12270)

Question 365574: Write a proportion and then solve to find how many points a student needs to score 78% if the test is worth 50 points.
Click here to see answer by ewatrrr(10682)

Question 365613: 2b+3a+4a=
b=6
a=5
what's the answer Please....
Click here to see answer by ewatrrr(10682)

Question 365709: 4x=20

Click here to see answer by jim_thompson5910(28595)

Question 365698: 14+6a-8=18
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Question 365726: Using standard notation to solve a problem; for example 2x=x+3
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Question 365767: a+5=-5a+5
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Question 365813: solve for n: 4(n-9)+2=12n+14

Click here to see answer by mananth(12270)

Question 365813: solve for n: 4(n-9)+2=12n+14

Click here to see answer by robertb(4012)

Question 365870: How do you turn a quadratic equation into a vertex form?
Click here to see answer by stanbon(57361)

Question 365880: 0.9x+5≤1.7x-8
Click here to see answer by Fombitz(13828)

Question 365951: A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one-half times the length of the equal sides. The perimeter is 28.5 centimeters. Find the lengths of the sides.
Click here to see answer by mananth(12270)

Question 366008: 4x=y =
xyz=t =
4xz=P =
y=xtz =
3.5tpx=R =
xy=wt =
ab=cx =
axc=by =
8xp=tyz =
3.7xy=7.4fp =
Click here to see answer by Alan3354(30993)

Question 366071: Write an equation for the statement. Half the number y is equal to y minus ten.
Click here to see answer by solver91311(16897)

Question 366075: 2x-4-5x-19
i need help on this question
Click here to see answer by fractalier(2101)

Question 366075: 2x-4-5x-19
i need help on this question
Click here to see answer by rfer(12662)

Question 366148: -2(-7k+4)+9=-13
I need to find k.
Click here to see answer by fractalier(2101)

Question 366073: How do you solve this problem?
x=.25[200,00-.10(200,000 - x)]
Click here to see answer by Fombitz(13828)

Question 366167: Hi Totally Stuck Here
i)If a and b are perpendicular, then by writing a= |a| and b= |b| simplify the expression (a-2b).(3a+5b)
May just be how it is written but i cant get my head around it
Many Thanks In Advance
Click here to see answer by Fombitz(13828)

Question 201050: Factor completely.
2x^2 - 12x + 16

Click here to see answer by S2012212(1)

Question 366384: HOW DO YOU SOLVE THIS
3X-5<4(3X+7-8)

Click here to see answer by stanbon(57361)

Question 366270: 3x+4/x-2 = 5
Click here to see answer by Fombitz(13828)

Question 366423: solve for r
r+1/3=8

Click here to see answer by rfer(12662)

Question 366372: How do you solve the equation: 5n + 7 = 7(n+1) - 2n
Click here to see answer by edjones(7569)

Question 366500: Given the equation y = 4x + 4, predict the 100th term.

Click here to see answer by Fombitz(13828)

Question 366516: how do I determine if x^2-3x+3=0 is a quadratic equation has two rational solutions,two irrational solutions, one repeated real solution,or two complex solutions that are not real.
Click here to see answer by stanbon(57361)

Question 366528: what number should be added to complete the square of the expression x^2-6x?
Click here to see answer by Fombitz(13828)

Question 366588: 12-5u=-48
Click here to see answer by jim_thompson5910(28595)

Question 366610: 7 + 6/a =5
Click here to see answer by ewatrrr(10682)

Question 366658: solve 4k-3=3k+14
Click here to see answer by jim_thompson5910(28595)

Question 366634: Solve for a using the addition and multiplication principles. 14-6a=-2a+3
Click here to see answer by jim_thompson5910(28595)

Question 366688: A=2.589R^2 solve for R
Click here to see answer by edjones(7569)

Question 366703: A children's inflatable pool takes 22 minutes to fill with an electrical pump. It takes 49 minutes to let the air out of the pool. If the pool's valve is accifentally left open, how long will it take to fill the pool?
Click here to see answer by mananth(12270)

Question 366700: Can you convert this sentence into an algebraic equation and then solve it
5 more than twice a number is 29

Click here to see answer by mananth(12270)

Question 366742: The length of a rectangle is 6 feet more than twice the width. If the length is 24 feet, what is the width?
Click here to see answer by mananth(12270)

Question 366830: can you please help me to solve this equation?
400r=x^2-40x+400
i want the answer in r

Click here to see answer by Alan3354(30993)

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