Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 873249: Solve the following system:
3x+2y=-1
5x+4y= 0
Click here to see answer by mananth(16946)

Question 873250: How can this equation be solved?
10/x-2 = 15/6+x
Thank you,
John
Click here to see answer by Fombitz(32388)

Question 873250: How can this equation be solved?
10/x-2 = 15/6+x
Thank you,
John
Click here to see answer by ewatrrr(24785)

Question 873299: find all numbers for which the rational expression is undefined 5/(v-9)
Click here to see answer by ewatrrr(24785)

Question 873335: X over 6+x-5 over 2=x-2

Click here to see answer by Fombitz(32388)

Question 873340: 2x-3 over 2 + x+1 over 3=3x-1 over 2
Click here to see answer by ewatrrr(24785)

Question 873379: Members of the Campus Roller Rink pay a yearly membership fee of $50 plus $5 each time they go skating. Nonmembers pay $10 each time they go skating. How many times would both a member and a nonmember have to go skating in a year in order to pay the same amount?
Click here to see answer by ewatrrr(24785)

Question 873381: Sandy and Suzanne are planting flower pots around the school building. Sandy has planted 33 pots and is planting at the rate of 10 pots per hour. Suzanne has planted 25 pots and is planting at the rate of 14 pots per hour. In how many hours will they have planted the same number of flower pots?
A. 3
B. 2.5
C. 2
Click here to see answer by ewatrrr(24785)

Question 873390: 2a/3x - 5a/3x
Click here to see answer by ewatrrr(24785)

Question 873389: The length of the sides of a square measure 2x - 5. The length of a rectangle measures 2x, and the width measures x + 2. For what value of x is the perimeter of the square the same as the perimeter of the rectangle?
A. x = 2
B. x = 10
C. x = 12
Click here to see answer by ewatrrr(24785)

Question 873415: 1. 9p = 6p + 21
2. -5t - 14 = 2t
3. 2k = 18 - 4k
Click here to see answer by jim_thompson5910(35256)

Question 873502: (3x+5)+2x=90
I need to know the process by which to solve please.
Click here to see answer by Alan3354(69443)

Question 873552: Cars A and B travel down the same road. A's speed
is r km/h and B's speed is s km/h (A's speed is less than B's)
When will B overtake A? t=A's time.
1. A and B start at the same time but A starts p km in front of B.
2. A and B start in the same place but A starts q hours before B.
Thank you.
Click here to see answer by josgarithmetic(39616)

Question 870343: For the following statement, note the key words, then translate into an expression.

6 less than one-fourth of C

Click here to see answer by tommyt3rd(5050)

Question 870440: what is the y-intercept for line A (0,1/2) (1/2,0) (0,-1) (-1,0)?
Click here to see answer by tommyt3rd(5050)

Question 873598: find the dy/dx for the following equation

Click here to see answer by Fombitz(32388)

Question 873599: the decomposition of a chemical compound C, over a period of time, t seconds is given by C=200(1-e^-0.01at )

Click here to see answer by Fombitz(32388)

Question 873532: How do I solve (4x+5)/10=(10x+2)/20
Click here to see answer by Fombitz(32388)

Question 873607: I am a square number less than 80. The sum of my digits is 9. What am I?
Click here to see answer by ben720(159)

Question 873711: What is the seventh term of (a-b)^6?
Click here to see answer by Fombitz(32388)

Question 873412: Solve for the indicated variable.
Solve for D: B=R-1/16(c-3D)
Click here to see answer by Fombitz(32388)

Question 873796: the question is "the sum of two consecutive whole numbers is one hundred seventeen. find the numbers" I know the two numbers must be 59 and 58, but we must do it algebraically. (for example; "the length of a rectangle is five meters more than the width. if the perimeter of the rectangle is 78 meters, find the length and width" the equation would be 4x + 10 = 78.) I understand how to do that, but how would I find the two consecutive whole numbers algebraically? thank you
Click here to see answer by josgarithmetic(39616)

Question 870454: What are the coordinates of point A (6,4) (6,-4) (-4,6) (4,6)?
Click here to see answer by tommyt3rd(5050)

Question 873986: When getting into shape by exercising, the subject's maximum recommended number of heartbeats per minute (h) can be determined by subtracting the subject's age (a) from 220 and then taking 75% of that value. Express h with a.
Click here to see answer by ewatrrr(24785)

Question 874070: What are the roots of the equation 3x^2-x+2=0?
Click here to see answer by Fombitz(32388)

Question 874078: The half-life of a radioactive isotope is 7 years. Initially, there are 100 grams of the isotope. Which expression shows the amount of the isotope remaining after x years?
Click here to see answer by ewatrrr(24785)

Question 874076: Isabella invested $500 at 6% annual interest, compounded quarterly. The value, A, of an investment can be calculated using the equation A=P(1+r/n)^nt, where P is the initial investment, r is the interest rate, n is the number of times the interest is compounded each year, and t is time in years. Exactly how long will it take for her investment to be worth four times as much (quadruple)in value?
Click here to see answer by Theo(13342)

Question 874098: Solve x/4 = 5/2
Click here to see answer by ewatrrr(24785)

Question 874146: Determine the x-intercepts of the graph of f(x)=7x^2+9x+1
Click here to see answer by ewatrrr(24785)

Question 874073: In electronics, according to Ohm's law, E = IR, where "E" is
voltage (measured in volts), "I" is current (measured in amps), and
"R" is resistance (measured in ohms).
What is the resistance in a circuit having a voltage of 0.02 volts
and a current of 1 milliamp (or 0.001 amps)?
Click here to see answer by Alan3354(69443)

Question 874220: can you please help me solve and understand this equation -4(x+10)-6=-3(x-2)

Click here to see answer by jim_thompson5910(35256)

Question 874261: I need help finding a quadratic equation with integer coefficients that has given solutions {-10,6}=0
Click here to see answer by rothauserc(4718)

Question 874378: What is x in 4x + 3 = -2x+ 7
Click here to see answer by ewatrrr(24785)

Question 874420: Given: d = rt, where "d" is distance, "r is rate, and "t is time.
A jeep leaves point A and travels due east an an average speed of
40 mi/hr. A sports car leaves the same point 4 hours later
traveling the same course at an average speed of 80 mi/hr. When
will the sports car catch up to the jeep?

Click here to see answer by ewatrrr(24785)

Question 874423: Given: d = rt, where "d" is distance, "r" is rate, and "t" is time.
How long does it take a jet flying 620 mi/hr to travel 1,984 miles
Click here to see answer by ewatrrr(24785)

Question 874422: Given: m1v1 = m2v2, where m1 and v1 are the initial mass and velocity,
respectively, and m2 and v2 are the final mass and velocity.
A 21,000 pound train engine is traveling an average speed of
60 mi/hr. It strikes a stationary box car that weights 29,000
pounds. The train engine and box car continue mangled together
at what speed along the track?

Click here to see answer by ewatrrr(24785)

Question 874573: Solve for X and describe each step:
1)4x-2=22
2)5x-7=3x+2
Click here to see answer by mxgirl22(39)

Question 874694: Cars A and B travel down the same road. A's speed
is r km/h and B's speed is s km/h (A's speed is less than B's)
When will B overtake A? t=A's time.
Both cars are d km's apart.
If a and b start toward each other how much later will they meet?
Thank you.
Click here to see answer by josgarithmetic(39616)

Question 874702: A rectangular garden is three times as long as it is wide. If the area of the garden is 2523 ft, find the length and width of the garden.
Click here to see answer by ewatrrr(24785)

Question 874679: X - 5 / 4 = 8. Find x.
Click here to see answer by Fombitz(32388)

Question 874774: Solve for the value of x that makes the equation true.
8 + 2(�6x + 5 + 7x) �12 = 6 � (47 + 3x � 7)
Click here to see answer by ewatrrr(24785)

Question 874776: Simplify the expression using the meanings and rules for exponents, Leave your final answer with positive exponents only.
(7a^-3b^2c^-2)^-2
Click here to see answer by ewatrrr(24785)

Question 874775: Factor by grouping: 27s2t � 36st2 +6s � 8t
Click here to see answer by ewatrrr(24785)

Question 874791: Multiply the polynomials
and simplify: (3x � 7)(�9x � 4).
Click here to see answer by ewatrrr(24785)

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, 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