Questions on Algebra: Equations answered by real tutors!

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Question 1012412: Make an equation of a line that passes through (2,-3) and is perpendicular to y=x-2
Click here to see answer by macston(5194)

Question 1005312: The length of a rectangle is 2 inches more than its width. The area of the rectangle is equal to 12 inches more than three times the perimeter. Find the length and width of the rectangle
Click here to see answer by macston(5194)

Question 1012421: Given the two systems, 2x-4y=6 and ax-8y=2. What should be the value of a be in order for the equations to have no solution
Click here to see answer by Fombitz(32388)

Question 1012421: Given the two systems, 2x-4y=6 and ax-8y=2. What should be the value of a be in order for the equations to have no solution
Click here to see answer by MathLover1(20849)

Question 1012416: E= {-2,1,3}
A= {-2,3,4,6}
-Find the Union of E and A.
-Find the intersection of E and A.
Click here to see answer by Fombitz(32388)

Question 1012425: A forest covers an area of 4500km^2. Suppose that each year this area decreases by 5.25%. What will the area be after 8 years? Please round your answer to the nearest square kilometer.
Click here to see answer by stanbon(75887)

Question 1012432: For each system, choose the best description of its solution(no solution, unique solution, infinite solutions). If applicable, give the solution.
x+2y=2 And -x-2y=6
-x-2y=-2 x+2y=6

Click here to see answer by Boreal(15235)

Question 1012438: For each system, choose the best description of its solution(no solution, unique solution, infinite solutions). If applicable, give the solution.
x+2y=2
-x-2y=-2
And
-x-2y=6
x+2y=6
Click here to see answer by Alan3354(69443)

Question 1012443: Write an equation that expresses the following relationship.
d varies directly with w and inversely with p. In your equation, use
k as the constant of proportionality.
Click here to see answer by stanbon(75887)

Question 999989: 17+6n=21+2n
Click here to see answer by macston(5194)

Question 1001966: A ribbon measuring (v+4) feet in length was cut into two pieces in the ratio 3:7. What was the length of the longer piece?
Click here to see answer by macston(5194)

Question 1002170: Total sales=2x In this example, $2 is the price per cup, and x represents the total cups sold. So if we sell 50 cups, we can multiply 2(50) to get the projected sales of $100. Now let�s add to that equation:'
Click here to see answer by macston(5194)

Question 1012495: How to get the answer to 18=-1a +2

Click here to see answer by Alan3354(69443)

Question 1005939: Perform the indicated operation and simplify answer. Please show work.
(x^2-12x+27/x-3)+(5x^2-45x/x+7)
Click here to see answer by macston(5194)

Question 1004039: 3xy + 10xy - 5x + 2x - 2yx?

\
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Question 1003816: g= 45 + 15h

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Question 1005555: The algebraic relation d=0.0056s^2+0.14s models he relation between a vehicle's stopping distance d, in meters and it's speed s, in kilometers per hour (km/hr).
What is the stopping distance for a car traveling at 120km/h?
Click here to see answer by macston(5194)

Question 1012509: 1.Nineteen more than a number is 42
2.Ten more than three times a number is 25
3.Fifteen more than four times a number is 63
4.x-27=35
5.4x+7=75

Click here to see answer by ikleyn(52781)

Question 1012542: Good Morning,
PLEASE Help learn how to solve the below methods.
1.Solve using the elimination method.
5r - 6s = -25
6r - 5s = 31
2. Solve the system of equation using the substitution methods.
2x + 3y = -3
2x -y = 6
Thanking you in advance Betty
Click here to see answer by psbhowmick(878)

Question 1012544: Hello my dear friends.
Learning how to solve word problems is so confusing HELP!!!!
1. In a certain year solar and wind energy generation totaled 1015 trillion BTU'S wind generated 52 trillion BTU'S more than 8 times that generated by solar energy. How much was generated by each source.
2. One canned Juice drink is 15% orange juice, another is 5% orange juice. How many liters of each should be mixed together to get 10L that is 6% orange juice.
Thanking you in advance Betty
Click here to see answer by stanbon(75887)

Question 1012557: Please help me solve this : 2x+3≥5x-6
Click here to see answer by Alan3354(69443)

Question 1012557: Please help me solve this : 2x+3≥5x-6
Click here to see answer by addingup(3677)

Question 1012585: please solve this problem (one third = x over 50)
1/3 = x/50
Click here to see answer by Fombitz(32388)

Question 1012585: please solve this problem (one third = x over 50)
1/3 = x/50
Click here to see answer by fractalier(6550)

Question 1012622: The quotient of the difference of a number and 24 divided by 8 is the same as the number divided by 6. I need to turn that into an equation.

Click here to see answer by ankor@dixie-net.com(22740)

Question 1012687: Jane spend $42 for shoes. This was $14 less than twice what she spend for a blouse. How much was the blouse?
Click here to see answer by fractalier(6550)

Question 1012686: Write the equation of the arithmetic sequence.
5, 10, 15, 20, ....
y= ______________________
My 6th grade son is doing prealgebra and I am confused on what they are trying to do here.
Click here to see answer by algebra hello(55)

Question 1012699: Good Morning,
PLEASE Help learn how to solve the below methods.
1.Solve using the elimination methods
x + 6y = 44
-x + 4y = 16

Thanking you in advance Betty
Click here to see answer by Alan3354(69443)

Question 1012700: Good Morning,
PLEASE Help learn how to solve the below methods.

Solve the system of equation using the substitution methods.
2x + 3y =2
2x - y =5

Thanking you in advance Betty
Click here to see answer by Fombitz(32388)

Question 1012701: Good Morning
Help Word problems so lost
A store mixes Kentucky bluegrass worth $11 per pound and chewing fesue worth $15 per pound mixture to sell for $12 per pound. How much of each is to be used to make a 276Ld.
Thank you betty
Click here to see answer by Alan3354(69443)

Question 1012732: Translate the following statement into an algebraic equation. let x represent the number. 1 less than 15 times a number is 9 times that same number.
Thank you for any help I may be given.
D Jack
sgtdjack@yahoo.com
Click here to see answer by macston(5194)

Question 1012736: 3x+7y=19
2x-7y=1
Click here to see answer by Alan3354(69443)

Question 1012736: 3x+7y=19
2x-7y=1
Click here to see answer by fractalier(6550)

Question 1012817: 32x+12y+44
Click here to see answer by addingup(3677)

Question 1012817: 32x+12y+44
Click here to see answer by ikleyn(52781)

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, 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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, 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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, 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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, 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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