Questions on Algebra: Equations answered by real tutors!

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Question 822417: Which of the following equations has no solution?

3x + 1 = 2x + 1
3x + 1 = 3x + 1
3x + 1 = 3x + 2
Click here to see answer by TimothyLamb(4379)

Question 822603: the sum of the three numbers is 171.the second number is 1/2 of the first and the third is 3/4 of the first. find the numbers.
Click here to see answer by ewatrrr(24785)

Question 822636: Find the common difference of the sequence shown 1/6, 1/3,1/2, 2/3,....
Click here to see answer by ewatrrr(24785)

Question 822648: Peggy had three times as many quarters as nickels. She had $1.60 in all. How many nickels and how many quarters did she have?
Which of the following equations could be used to solve the problem?
Click here to see answer by stanbon(75887)

Question 822643: Which of the following represents 3x - 5y + 10 = 0 written in slope-intercept form?
Click here to see answer by ewatrrr(24785)

Question 822671: What is the equation of the line that passes through (-3, -1) and has a slope of 3/5? Put your answer in slope-intercept form.

Click here to see answer by ewatrrr(24785)

Question 822669: What is the solution set of the following equation?
-8x + x + 15 = -7x + 12

Click here to see answer by ewatrrr(24785)

Question 822672: Solve the following problem. It may be helpful to use draw a chart on scrap paper to organize the information and write the equation. Be sure to show all steps (V.E.S.T.) and work in order to receive full credit.
A grocer wants to make a 10-pound mixture of cashews and peanuts that he can sell for $3.29 per pound.
If cashews cost $5.60 per pound and peanuts cost $2.30 per pound, how many pounds of each must he mix?
Click here to see answer by ewatrrr(24785)

Question 822610: Solve by setting up a system of linear equations with 2 variables and 2 unknowns. An overwhelmed concert manager realized the next day after a concert that 350 ticket receipts were counted. The price for a student ticket was $12.50 and the price for an adult ticket was $16.00. The register confirmed $5,075 was taken in, too. What the manager did not keep track of was the number of student tickets and the number of adult tickets that were sold. How many of each were sold?
Click here to see answer by ankor@dixie-net.com(22740)

Question 822998: Find an Equation of the line with slope 9 an d containing the point (-1,-5)

Click here to see answer by ortarico(23)

Question 823010: 5�?+4=24
Click here to see answer by heligirl(3)

Question 823122: 1/4x=1/20x+1 how do you solve this step by step
Click here to see answer by stanbon(75887)

Question 823146: Rico planted 18 flowers in 30 mins. At the same rate how many flowers would he plant in 55 mintues?
a. 30
B. 33
C.36
D.38
Click here to see answer by ewatrrr(24785)

Question 823179: solve each equation and circle one solution, no solution, or identity
1. 10(t-4)= 5(2t-8)
one solution
identity
no solution
Click here to see answer by Edwin McCravy(20054)

Question 823193: Please help me solve: 1 + 9a + 15 = 16a
Thank you for your help!
Click here to see answer by jim_thompson5910(35256)

Question 823234: Please help me with the following question:
(3 + x) / 7 = (3 + x) / 12
Thank you!
Click here to see answer by TimothyLamb(4379)

Question 823218: Solve the following system of equations.
8x + 5y = -91
3x + y = -21

Click here to see answer by TimothyLamb(4379)

Question 823227: Please help me with this question.
When you add three to a number and then divide the sum by seven, you get the same result as when you add three to the same number and then divide the sum by twelve. What is the number?
Thank you for your help.
Click here to see answer by TimothyLamb(4379)

Question 823208: Please help me answer this word problem:
When you add three to a number and then divide the sum by seven, you get the same result as when you add three to the same number and then divide the sum by twelve. What is the number?

Thank you for your time!
Click here to see answer by rfer(16322)

Question 823362: r/4 - 1 = 4
Click here to see answer by erica65404(394)

Question 822634: What is the solution set of the following equation?
-8x + x + 15 = -7x + 12
Click here to see answer by tommyt3rd(5050)

Question 823436: The average rate of change of the function f(x)=x^2 between x=1 and x=5 is
average rate of change= ?/?=
I hope this is clear enough. Please help.
Click here to see answer by ewatrrr(24785)

Question 823618: I am unsure how to solve this type of eqations 4.2 +2.5a=9.2 can you please walk me through this.thank you.
Click here to see answer by TimothyLamb(4379)

Question 823641: what would the algebraic expression look like for : eight centimeters less than three times the height

Click here to see answer by edjones(8007)

Question 823635: solve for y y/m + y/n = p
a. y=mn/p
b. y=mnp/m+n
c. y=n+m/mnp
Click here to see answer by edjones(8007)

Question 822948: Two angles of triangle measures 35 and 90 degrees. the sum of triangles of any triangle equal 180 degrees. Uses this information to write an equation to solve for the third angle of the triangle and solve it.

Click here to see answer by TimothyLamb(4379)

Question 822646: Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then.
Find Ralph's age now.
Click here to see answer by TimothyLamb(4379)

Question 820196: what is that answer to 2x+3y=12 4x=10+y when solving by elimination

Click here to see answer by TimothyLamb(4379)

Question 823730: The measure of one acute angle in a right triangle is four times the measure of the other acute angle. Write and solve a system of equations to find the measure of the acute angles.
Click here to see answer by richwmiller(17219)

Question 823642: solve 5/x-1=3/x

x=-8
x=-2
x=2
x=8
Click here to see answer by Alan3354(69443)

Question 823756: Sue has a sock drawer where she collects nickels, dimes, and quarters. The total number of coins in her drawer is 37 with a total of $4.00. The number of dimes is 7 more than the number of nickels. How many coins of each type does she have?
Click here to see answer by TimothyLamb(4379)

Question 823833: A Number,y, is decreased by 6, and the resulting difference is multiplied by 6. then 6 is add to this product, and 1/6 of this sum was taken. what is the value of the resulting number, in terms of y?
Click here to see answer by richwmiller(17219)

Question 823640: solve for y r/3-2/y=s/5
a. y=1/5r-3s
b. y=30/5r-3s
c. y=5r-3s/30
Click here to see answer by richwmiller(17219)

Question 823636: solve x/9+3=7-x/3
x=_____a^0
Click here to see answer by jim_thompson5910(35256)

Question 823637: solve for k 4k+3/6+4k-8/9=5k-4/3-k-3/2
a. k=-4
b. k=-10
c. k=44
d. k=58
Click here to see answer by jim_thompson5910(35256)

Question 823894: three times the difference of two times m and five is equal to eight times m to the second power increased by four
Click here to see answer by josgarithmetic(39616)

Question 823889: how to add (a+b)+(b+c)
Click here to see answer by richwmiller(17219)

Question 823956: To go on the class trip, Chang needs at least $125. He has saved $45, and he makes $7 an hour at his job.
What is the minimum number of complete hours he must work to have enough money to go on the trip? (Assume there are no withholdings from his check.)

10 hours
11 hours
12 hours
Click here to see answer by TimothyLamb(4379)

Question 824014: Please help me solve the following questions.
I have upload the image to >>> http://oi43.tinypic.com/mcyfk7.jpg <<<
Sorry, i cant draw in table here.
Thanks..
Click here to see answer by josgarithmetic(39616)

Question 824016: There are two trains, one of them is 140 m long, it moves 24 m per second. Another train is 230 m long, it moves 13 m per second. Now the trains are approaching to each other. How much time needed for the trains to meet until they leave each other?
Click here to see answer by lwsshak3(11628)

Question 824071: a lion eats an antilope in 2 hours. a tiger eats an antilope in 4 hours. a jackal eats it in 6 hours. how many hours does it take for all 3 predators to eat an antilope? thanks
Click here to see answer by josgarithmetic(39616)

Question 824151: if A is not equal to B and 1/x + 1/a = 1/b
THEN x=
A. 1/b - 1/a
B. b-a
C. 1/ab
D. a-b/ ab
E. ab/ a-b
Click here to see answer by richwmiller(17219)

Question 824148: If f(x) = (1/3)^x and a < b
Which of the following must be true?
A. f(a) + f(b) = 3
B. f(a) + 1/3 = f(b)
C. f(a) = f(b)
D. f(a) < f(b)
E. f(a) > f(b)
Click here to see answer by jsmallt9(3758)

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