Questions on Algebra: Equations answered by real tutors!

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Question 95030: A survey of 400 people found that 66 were left-handed. What percent
of those surveyed were left-handed?

Click here to see answer by checkley71(8403)

Question 95069: How do I work the following problem to solve for N...
Numerator = N
Demominator = 3
the fraction N/3 is then multiplied by 4
N/3 X 4 =
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Question 95029: The electricity costs of a business decreased from $12,000
one year to $10,920 the next. What is the rate of decrease?

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Question 95027: Sam must have an average of 70 or more in his summer course to
obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality
representing the score that Sam must get on the last test to get a C grade.

Click here to see answer by checkley71(8403)

Question 95026: The cost for a long-distance telephone call is $0.36 for the
first minute and $0.21 for each additional minute or portion thereof. Write an
inequality representing the number of minutes a person could talk without
exceeding $3.

Click here to see answer by checkley71(8403)

Question 95038: please help me solve this sequence of numbers
fill in the blank 2, 8,27,85,260,________,2365
i have tried adding,,,,,multiplying....i'm stuck
Click here to see answer by scott8148(6628)

Question 95107: (-2)(-7)(11)=
Click here to see answer by checkley71(8403)

Question 95108: Using the elimination method to solve for the point of intersection, (x,y,) between these to lines:
3x - 2y = 9
2x + y = 13
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Question 95106: (-6) - 2(-1) =
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Question 95102: Using the quadratic formula, find the two values for x that solve this qudratic equation:
x(with 2 exponent) + 2x - = 0
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Question 95104: (-7) - (-5) =
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Question 95105: 5(-2) - 3(-5) =
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Question 95166: What is a function that cannot have a power higher than 1?
Click here to see answer by stanbon(57242)

Question 95150: please help me find the answer to the problems 15+b=4, c/14=-3, -x/8=12.
Please explain how to solve these problems.
Thank you
Vanessa
Click here to see answer by kiljoy(51)

Question 95212: What two consecutive even integers whose sum is 126?
Click here to see answer by kiljoy(51)

Question 95130: Slove :

(-9)(12)(-4)
____________
(18)(-6)
Click here to see answer by checkley71(8403)

Question 95174: please teach show me how to do two step equtions
Click here to see answer by stanbon(57242)

Question 95316: -2m+3=-5m-30
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Question 95397: What number should be added to complete the square of the following expression?
x^2+5/3x

Click here to see answer by stanbon(57242)

Question 95500: Can someone please help me with this equation
19h - 7 = 23 + 14h
Click here to see answer by stanbon(57242)

Question 95499: -9 = 9 (9 - 5t )
Can someone please help me with this equation?
Click here to see answer by stanbon(57242)

Question 95497: Can someone please help me with this equation
-4 (x - 9 ) = -8

Click here to see answer by stanbon(57242)

Question 95497: Can someone please help me with this equation
-4 (x - 9 ) = -8

Click here to see answer by bucky(2189)

Question 95496: Can someone help me with this equation?
26 + 8y - 18 = 0
Click here to see answer by edjones(7569)

Question 95495: Can someone please help me with this equation?
What is m/3 + 16 = 20

Click here to see answer by edjones(7569)

Question 95520:
Click here to see answer by checkley71(8403)

Question 95520:
Click here to see answer by krb88417(2)

Question 95494: Can someone please help solve this equation:
6v + 7 = -29
Thank YOU
Click here to see answer by checkley71(8403)

Question 95535: -6x+16=5(x+1)
Please tell me how to solve this problem.
Thank you
Click here to see answer by jcamille(5)

Question 95524: the peak of tanzanias mountain kilimanjaro stands 19,340 feet above sea level.
What is the integer that best expresses the given number.
Click here to see answer by checkley71(8403)

Question 95378: At a figure skating performance, 1/3 of the the skaters completed a triple jump. if 18 skaters perfomed, how many skaters did not completed a triple jump?
Click here to see answer by checkley71(8403)

Question 95344: 4xsquared-3x-5 when x=negative 3
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Question 95558: Hello:
Solve the following equations algebraically:
2/(y+3)+3/(y-4)=5/(y+6)
I really don't know even where to start on this one.
I was thinking first I should move over the right side and than try to find a common denominator.
Any help will be gretaly appreciated.
Click here to see answer by stanbon(57242)

Question 95579: 2/3+1/4t=1/3
Click here to see answer by checkley71(8403)

Question 95581: this is probably a simple problem but i'm making it to hard.
Directions: write an expression in terms of the given variable that represents the indicated quantity
Problem:
the sum of 3 consecutive odd natural numbers if the least is x.
Click here to see answer by checkley71(8403)

Question 95582: A man left an estate of $64,000 to three children. the eldest child recieved three times as much as the youngest. the middle child received $14,000 more than the youngest. how much did each child recieve.
we know that
e=3y
m=y + 14000
m + y + e= 64000
and now i'm not sure how to set up the problem...please help
Click here to see answer by checkley71(8403)

Question 95589: 2/3+3y=5y-2/15
i tried to put a 1 over the 3 and 5 with y's but i still couldn't figure it out. also i tried to subtract 2/3 from each side.
Click here to see answer by stanbon(57242)

Question 95576: 1-2/3y=9/5-y/5+3/5
Click here to see answer by edjones(7569)

Question 95595: 5/16y+3/8y=2+1/4y and also can u show me how to check it
thanks
Click here to see answer by stanbon(57242)

Question 95595: 5/16y+3/8y=2+1/4y and also can u show me how to check it
thanks
Click here to see answer by bucky(2189)

Question 95641: I am having trouble. Can someone please help me.
Solve:
-3(x+1)=2(x-8)+3
Click here to see answer by Earlsdon(6287)

Question 95640: 3/7x +2 =4/7x-5
I have tried this over and over again - i keep coming up with -49, but the answer should be 7. I cannot figure it out.
I learned that you should multiply everything by the LCD to make everything a whole number first.

Click here to see answer by stanbon(57242)

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