Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 582620: Solve for x. 90=x/x+15
Click here to see answer by jim_thompson5910(35256)

Question 582620: Solve for x. 90=x/x+15
Click here to see answer by stanbon(75887)

Question 582645: I need help with this equation 6-3y=y+8
Click here to see answer by nyc_function(2741)

Question 582663: I need help with this equation 4.5x-2.3=7
Click here to see answer by jim_thompson5910(35256)

Question 582666: I need help with this equation 6x-(4-x)=3x
Click here to see answer by jim_thompson5910(35256)

Question 582669: I need help with this equation |y-3|=4
Click here to see answer by jim_thompson5910(35256)

Question 582667: Graph the function below. Determine the domain, range, and horizontal asymptote. Please show all of your work. f(x) = (3/4)^(x+3)
Click here to see answer by stanbon(75887)

Question 582686: eleven decreased by half a number, n, is equal to seven. What does "half a number" mean and what is the number?
Click here to see answer by stanbon(75887)

Question 582686: eleven decreased by half a number, n, is equal to seven. What does "half a number" mean and what is the number?
Click here to see answer by mananth(16946)

Question 582693: how many tires does it take to make m minivans if each one has a spare
Click here to see answer by richard1234(7193)

Question 582693: how many tires does it take to make m minivans if each one has a spare
Click here to see answer by stanbon(75887)

Question 582693: how many tires does it take to make m minivans if each one has a spare
Click here to see answer by josmiceli(19441)

Question 583030: 3x+5=7x-15
Click here to see answer by JBarnum(2146)

Question 583507: What is 10a+a-7a? Is it 3a?
Click here to see answer by mananth(16946)

Question 583514: -1x -5=-13
Click here to see answer by JBarnum(2146)

Question 583733: 1. Refer to the triangle below. If side a = 4 and side b = 6.

a. Find the exact length of c. (No decimals!)

b. Find the exact length of c in simplified radical form. (Use those perfect squares!)

c. Find c to the nearest hundredth.

Click here to see answer by solver91311(24713)

Question 583798: x^3+2x^2+3x+6=0
Click here to see answer by jim_thompson5910(35256)

Question 583731: Solve the equation, rounding answers to the nearest tenth. (How many answers will you have?)
2x� - 4 = 36

Click here to see answer by richard1234(7193)

Question 584080: Steve's mom weighs 75 pounds more than Steve. Together the weigh 100 pounds. How much does Steve weigh?
Steve:
Mom:
Equation:
Answer:
Click here to see answer by Maths68(1474)

Question 584036: -16+5n=-7(-6+8n)+3

Click here to see answer by rfer(16322)

Question 584348: Write an equation in standard form of the line satisfying the following condition. The line goes through (3,-2), and is vertical.
Click here to see answer by Alan3354(69443)

Question 584344: please help
what is the equations for
x | y
1 | 1
2 | 1 + 2
3 | 1 + 2 + 4
4 | 1 + 2 + 4 + 8
5 | 1 + 2 + 4 + 8 + 16
6 | 1 + 2 + 4 + 8 + 16 + 32
this is driving me crazy please help

Click here to see answer by Alan3354(69443)

Question 584351: Is pair of lines parallel, perpendicular, or neither?
f(x)=-4x+7
g(x)=7x+3
Click here to see answer by solver91311(24713)

Question 584351: Is pair of lines parallel, perpendicular, or neither?
f(x)=-4x+7
g(x)=7x+3
Click here to see answer by richwmiller(17219)

Question 584353: Find an equation of the line having given the slope and containing the given point. M=-6,(3,7) y=____
Click here to see answer by solver91311(24713)

Question 584339: The latitude of Cambridge is 42.4 degrees north of the equator. If the diameter of the earth is 7920 miles, how far is Cambridge from the equator?
Click here to see answer by richwmiller(17219)

Question 584520: I am having trouble with writing out the equations that are in word form. Please help me.
-Write an equation and solve:
four more than twice a number m is the sum of 4 and 8.
Click here to see answer by josmiceli(19441)

Question 584719: 6 times some number equals 30
Click here to see answer by Schaman_Dempster(26)

Question 584837: Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2-4x-8y+4=o
Click here to see answer by richwmiller(17219)

Question 584805: 11x-4=10x
Click here to see answer by jim_thompson5910(35256)

Question 584808: 10+x-(2-3x)=4
Click here to see answer by jim_thompson5910(35256)

Question 584904: m/9 - 7/18 =1

Click here to see answer by jim_thompson5910(35256)

Question 584917: Please help me solve this equation: Solve for W V=1/3LWH
64=1/3(6)W(4)
64=8W
W=8 ???
Click here to see answer by jim_thompson5910(35256)

Question 585019: How do you solve 4(x+2)=20
Click here to see answer by jim_thompson5910(35256)

Question 584614: A jeweler has four rings, each weighing 20 grams, made of an alloy of 5% silver and 95% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 80%.
(a) Construct a model that gives the fraction G(x) of the new alloy that is pure gold. (Let x represent the number of grams of silver added.)
G(x) =

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

Question 585162: Find the equation of the line that contains the given point and has the given slope. (Let y be the dependent variable and let x be the independent variable.)
P(2, 5), m = − 2/3

Click here to see answer by jim_thompson5910(35256)

Question 585160: Find the equation of the line that contains the given point and has the given slope. (Let y be the dependent variable and let x be the independent variable.)
Point (9, 9), m = −9/10
Click here to see answer by jim_thompson5910(35256)

Question 585172: THE force F exerted upon a large piston is as many times the force f applied to a small piston as the area A of the large piston is times the area a of the small piston. Express this as a formula.
Click here to see answer by Alan3354(69443)

Question 585184: I don't get this one, I get stuck on the 3rd step.
(x+9)^2=18
=x^2+81-18=0
=x^2+63=0
I don't know what to do after this since there is no square root of 63 that is a whole number. help?
Click here to see answer by ankor@dixie-net.com(22740)

Question 585205: y=-1/2x+2
what equation the line shown?
Click here to see answer by jim_thompson5910(35256)

Question 585232: How do I find all numbers for which the rational expression is undefined? The rational expression is 9/9w+8. Thank you in advance for your help!
Click here to see answer by jim_thompson5910(35256)

Question 585228: solve: (2m-9)(6+5m)=(10m+15)(m-2)
I am not understanding how to do these!
Click here to see answer by josmiceli(19441)

Question 585207: If x^2 = 6x-9 , then what value is 5x^2+x-8 ? The hint is to solve for x first.
Click here to see answer by sofiyac(983)

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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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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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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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