Questions on Algebra: Equations answered by real tutors!

Algebra -> Algebra -> Equations -> Questions on Algebra: Equations answered by real tutors! Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

Algebra: Equations

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Equations (FREE)

Question 42308: BOB & MARY EACH HAVE APPLES
IF BOB WERE TO GIVE MARY 2 OF HIS APPLES MARY WOULD HAVE TWICE AS MANY APPLES AS BOB. HOWEVER, IF MARY WERE TO GIVE BOB 2 OF HER APPLES, BOTH MARY AND BOB WOULD HAVE THE SAME NUMBER OF APPLES. HOW MANY APPLES DOES BOB AND MARY TO START?
Click here to see answer by fractalier(1804)

Question 42316: t^2-8t-9 over t^2+5+4
show work
Click here to see answer by Nate(3495)

Question 41644: If Y varies directly as X and X=88 when Y= 110, find X when Y= 70
Click here to see answer by Nate(3495)

Question 42315: t^2-9 over 5t+15
show work
Click here to see answer by longjonsilver(2297)

Question 42314: x^2 over 4x-12
show work
Click here to see answer by nik_consult(24)

Question 42296: graph the following equation and give the points
y=-4x
Click here to see answer by venugopalramana(3286)

Question 42317: x^3-27 over 5x^2+15x+45
show work
Click here to see answer by tutorcecilia(2042)

Question 42295: graph the following equations and give the points
y=2/3x+1 , y=-3x-2
Click here to see answer by venugopalramana(3286)

Question 42294: graph the following equations and give the points
y=2x , y=2x+1
Click here to see answer by venugopalramana(3286)

Question 42407: Show your work
7x - 2 + 3x - 9
Click here to see answer by prabhjyot(164)

Question 42407: Show your work
7x - 2 + 3x - 9
Click here to see answer by jmg(22)

Question 42426: My algebra is very, very rusty and I would like help with the problem below:
I have a 50% solution that I would like to mix with a 0.20 ml solution and achieve a final concentration of 6%. Please help me calculate the volume of the 50% solution that I will need to add to the 0.20ml to achieve a final concentration of 6% using an algebraic equation.
Click here to see answer by stanbon(26259)

Question 42419: two trains ,each 80m long passes each other on parallel lines.If they are going in the same direction,the faster train takes one minute to pass the other completely.If they are going in opposite directions,they overtake each other in 3 seconds.find the rate of each train in metre per second.
Click here to see answer by Paul(988)

Question 42481: Write the equation of the line which has y-intercept (0,5) and is perpendicular to the line with equation y=-3x+1
Click here to see answer by Nate(3495)

Question 42482: Write the equation of the line with slope -2 and y-intercept (0,0). Then graph the line. Is it y=-2x? Please help!
Click here to see answer by Nate(3495)

Question 42480: write the equation of the line passing through (4,4) and (4,2)
A) y=4
B)y=-2x
C) x=4
D) y=x+4
Click here to see answer by Nate(3495)

Question 42485: Graph y=3x
Click here to see answer by Nate(3495)

Question 42488: -4-(-3)^2
Click here to see answer by nik_consult(24)

Question 42521: Is 4 a solution to the equation x + 7 = 11?
Click here to see answer by Nate(3495)

Question 42516: Is 15 a solution to the equation 8 – x = 7?
Click here to see answer by Nate(3495)

Question 42513: problem 6 i need serious help on thanks

4x+8 =- 4
Click here to see answer by Nate(3495)

Question 42512: 2 over 5 x= -10

I believe it is -25.Am I correct?
Click here to see answer by Nate(3495)

Question 42507: problem 1 Solve. 6x – 0.37 = 5(x – 0.28)
A) –0.69 B) –1.24 C) –0.89 D) –1.03

I thought it was d but i got it wrong
Click here to see answer by Nate(3495)

Question 42577: solve
(t+2)^3(t^2+2t+1)(t+1) over (t+1)(t^2+4t+4)(t+2)
show work
Click here to see answer by jmg(22)

Question 42577: solve
(t+2)^3(t^2+2t+1)(t+1) over (t+1)(t^2+4t+4)(t+2)
show work
Click here to see answer by Nate(3495)

Question 42584This question is from textbook

: can you please help me with this equation
3r divided by 4 =2 and 1 half
solve and check
please explain how you get the answer because i tend to have trouble with fractionsThis question is from textbook

Click here to see answer by jmg(22)

Question 42536: Find x in the solution of the system 3x + y = 2 and 2x - 3y = 16.
Thanks
Click here to see answer by fractalier(1804)

Question 42534: Write an equation of the line that passes through (9,6) and is perpendicular to the line whose equation is y=-1/3(x)+7.
Click here to see answer by fractalier(1804)

Question 42592: Solve. –3(10x – 3) + 10(3x – 3) = x – 7
Click here to see answer by fractalier(1804)

Question 42659: please help me with this equation
3t+1/2t=28 solve and check
can you explain how you get the answer

Click here to see answer by Socom491(19)

Question 42652: Which label describes the following?
3x + 6 = 10
A) Linear equation B) Equation which is not linear C) Expression

Isn't it B!
Click here to see answer by tran3209(100)

Question 42626: If there are 900 people in the town, how many people have both cats and? dogs
people with cats represent 28%
People with dogs represent 44%
people with both dogs and cats represent 22%
people with neither 6%
Click here to see answer by Socom491(19)

Question 42643: problem 7 i need help on thank you ..

x/6 + 3 = 9
Click here to see answer by tran3209(100)

Question 42628: Find the y-intercept -x+3y=15
A). (5,0)

B) (0,-15)
C) (0,5)
D) (-15,0)
Click here to see answer by checkley71(8405)

Question 42627: Find the slope of the line passing through the points (-7,-4) and (-1,-10)
Click here to see answer by checkley71(8405)

Question 42675: Which two equations represent perpendicular lines
A) y=4/7x-3
B) y=3x-.
C) y=-1/3x+.
D) y=.x-.
Click here to see answer by rapaljer(3620)

Question 42674: Which equations is undefined
A) y=4
B) y=-2x
C) x=4
D) y=x+4
Click here to see answer by Nate(3495)

Question 42674: Which equations is undefined
A) y=4
B) y=-2x
C) x=4
D) y=x+4
Click here to see answer by rapaljer(3620)

Question 42630: solve
t^2-8t-9 over 5x^2+15x+45
show work
Click here to see answer by rapaljer(3620)

Question 42624: Use the following table to answer the question
Population of Europe by Age Groups
Population (in thousands) 1950 1970 1995
Age 0-14 143,175 166,367 139,464
Age 15-64 359,162 421,432 487,110
Age 65+ 44,981 68,642 101,338
Age 75+ 14,553 22,762 38,139
Total 547,318 656,441 727,912
What was the percentage increase in the age 75+ population of Europe from 1970 to 1995?
A). 65.1%
B).67.6%
C). 63.4%
D). 68.9%
Click here to see answer by rajagopalan(125)

Question 42861: Find the slope and y- intercept of the line represented by the following equations.

problem 12:

2x- 3y = 6
Click here to see answer by fractalier(1804)

Question 42873: 3u-7 + 7u-6 = 11
6 3
The 3u-7 is over the 6 and the 7u-6 is over the 3. I tried it with a common denominator of 6. The 7 and 11 is confusing me.
Thank you!
Click here to see answer by fractalier(1804)

Question 42875: write the equation of the line passing through each of the given pairs of points. the result in slop- intercept form,if its possible.

(2,-3) and (2,4)
Click here to see answer by fractalier(1804)

Question 42884: can someone solve this rational problem
5 over 12x^4y minus 1 over 5x^2y^3
Click here to see answer by ilana(236)

Question 42906: how about this one
2x^2 = 6x
Click here to see answer by fractalier(1804)

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