Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 759119: Solve for x.
3y/7x=9

Click here to see answer by Cromlix(4381)

Question 759419: 4-3(3x-2)=7x+5

Click here to see answer by stanbon(75887)

Question 759677: what is seven times a number plus the sum of three and twice anumber is 30 ?
Click here to see answer by KMST(5328)

Question 759679: In a circle of radius 17, find the length of the arc spanned by a central angle pi/4 radians. Use 3.1416 for pi and round to 2 decimal places. Help please I am not understanding!!
Click here to see answer by Cromlix(4381)

Question 759823: what is the difference of nine and a number divided by four is 13 ? what would be the equation ??
Click here to see answer by josmiceli(19441)

Question 759947: y - 12 = 15
Click here to see answer by lenny460(1073)

Question 760067: Find the sum of the squares of the three solutions of the equation x^3+(3x)^2-7x+1=0

Click here to see answer by KMST(5328)

Question 760299: solving this equation
7^3-29^3) A classmate answered 24,732. i have no clue how she reached that solution.
Click here to see answer by Alan3354(69443)

Question 760308: what is the domain using interval notation for :f(y)= y+9/y^2-9y
Click here to see answer by tommyt3rd(5050)

Question 760409: how to solve
(x-3)/5 - (x+3)/2 = 6
Click here to see answer by DrBeeee(684)

Question 760416: y=6x
y=5x+7
Click here to see answer by DrBeeee(684)

Question 760407: how to solve
[3/(m+2)] - (2/3) = 5
Click here to see answer by josgarithmetic(39617)

Question 760414: y=7x-10
y=-3
Click here to see answer by MathLover1(20849)

Question 760474: Its been a while since I graduated high school, and I'm trying to refresh my memory on some math. I don't quite understand how to solve this problem, could you please help and explain it to me step by step?
Solve for t, f(t+1)=0, f(x)=x^2-7x+10
Click here to see answer by Theo(13342)

Question 760540: Factor completely.
2xy^2+10xy-100x=
I come up with a different number each time and I have no clue on why this happening and then another time I came up with the trinomial is prime. Is it prime or can you answer it?

Click here to see answer by stanbon(75887)

Question 760629: Is x=2 a solution to 8x-2=10-16x? Yes or No?

Proof:
Click here to see answer by solver91311(24713)

Question 760682: -1 ≤ -3 + 2x < 17
Click here to see answer by jim_thompson5910(35256)

Question 760690: -2(x+1)+3x=14
I dont get how to cancel when all yu have is the answer on one side how can x equal 16 cause my book say's the answer is 16
Click here to see answer by jim_thompson5910(35256)

Question 760697: How to solve 2x^2 - 3x -2=0
please do it step by step
Click here to see answer by stanbon(75887)

Question 760697: How to solve 2x^2 - 3x -2=0
please do it step by step
Click here to see answer by jim_thompson5910(35256)

Question 760826: if x varies directly as y, and x=24 when y=8, find x when y=10
Click here to see answer by ramkikk66(644)

Question 760825: add as indicated x^2 over x+5 plus 5x over x+5 simplify your answer
Click here to see answer by Stitch(470)

Question 760824: the current I is an electrical conductor varies inversely as the resistance R of the conductor. the current is 5 amperes when the resistance in 990 ohms. what is the current when the resistance is 530 ohms?
Click here to see answer by Stitch(470)

Question 760817: r/s^2 over r^2/s (its a fraction within a fraction like a fraction over another fraction)
Click here to see answer by rothauserc(4718)

Question 760928: hi, my name is nia. i am having a problem with equations. i think it's called equation factoring,i'm not really sure. the question on my packet says "what polynomials equals (x+6)(2x-3)?"
i have google this question at least five times, i tried working it out the way i know how, and i still not getting the answer that are available. can you explain to me how to do this problem?
Click here to see answer by Alan3354(69443)

Question 760903: For any positive integer n, ((n+1)!/n!)-n =
The answer is 1 Please explain....
Click here to see answer by rothauserc(4718)

Question 761064: 5000+5x=46,000
Click here to see answer by Cromlix(4381)

Question 761100: what is the value of x if the slope of the line through A(3,-2) B(x,-5)is -3?
Click here to see answer by Cromlix(4381)

Question 761217: 2x+y=8, if y=6 then x= -1
Click here to see answer by solver91311(24713)

Question 425272: Scott took out a 4-year car loan for $5,500. He paid back a total of $7,370. What interest rate did he pay for this loan?

Click here to see answer by cherry precilla(2)

Question 761506: 11x^2+33x=0
Click here to see answer by MathLover1(20849)

Question 761571: Find the roots of x^2+11x =-30
I need the steps please and thank you.
Click here to see answer by ramkikk66(644)

Question 761607: Stable High School has a total of 112 boys and girls who play sports. If the number of girls, g is 16 more than twice the number of boys, b, how many girls play sports at this high school?
Which system of equations would help you solve this problem?
b + g = 112
b = 2g + 16

b + g = 112
g = 2b + 16
b − g = 112
b = 2g − 16
None of the systems above would solve this problem.

None of the systems above would solve this problem.

Click here to see answer by stanbon(75887)

Question 761606: Solve the following system of equations:
−2x + y = 1
−4x + y = −1

Click here to see answer by stanbon(75887)

Question 761610: Solve the following and show all work
x - 2y = 14
x + 3y = 9

Click here to see answer by Alan3354(69443)

Question 761612: Please help! I accidently reset my sons work page and all his answers went away.
Solve the following and show all work
x - 2y = 14
x + 3y = 9

Click here to see answer by stanbon(75887)

Question 761629: solve for x, -4w+8=2w+44
Click here to see answer by Cromlix(4381)

Question 761572: Find the roots of 3x^2+2x-4=0
I need the steps please and thank you.
Click here to see answer by rothauserc(4718)

Question 761669: A barrel contains 106 gallons of paint and is being drained at a constant rate of 14 gallons per hour. Write an equation that models the number of gallons, g after t hours. The equation that models the given situation is?
Click here to see answer by stanbon(75887)

Question 761675: If x varies directly to k, and k = 19 when x = 30. Find x when k = 171.
Click here to see answer by sachi(548)

Question 761676: If m varies directly to the square root of k, and k = 196 when m = 27. Find m when k = 4,900.
Click here to see answer by sachi(548)

Question 761772: Solve the word problem below using the steps given in the lesson above. Show your equation and each step you take to solve it.
Neil and Tom love to collect baseball cards. Neil has 83 more baseball cards than Tom. Neil has 517 baseball cards.
How many baseball cards does Tom have?
Click here to see answer by Cromlix(4381)

Question 761801: A running back carries the ball five times. Find his total yardage if the carries were 9, -2, -1, 13, and 5 yards.
Click here to see answer by Alan3354(69443)

Question 761834: How do i find the coefficient of x^2 in the expansion of (x+(1/x))^20 ?
Click here to see answer by MathLover1(20849)

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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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