Questions on Algebra: Equations answered by real tutors!

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Question 546938: Find three consecutive odd numbers such that three times the smallest number is the same as nine more than twice the largest.
Click here to see answer by Maths68(1474)

Question 546936: -3x-4y=27
5x-6y=-7
Click here to see answer by Maths68(1474)

Question 546997: 4 = 3 + x
Click here to see answer by Maths68(1474)

Question 547018: 7 + x = 2x
Click here to see answer by Maths68(1474)

Question 547209: Having trouble finding the answer
2x^2+5=5x^2-37
has to be a radical number for the answer
Click here to see answer by rfer(16322)

Question 547238: Find the slope,if it exists, of the line containing the pair of points. (4,2)and(5,-4)
Click here to see answer by stanbon(75887)

Question 547239: Solve by the elimination method.
7r-3s=3
3r+7s=51
I think there is no solution but I'm not sure if I'm correct.
Click here to see answer by mathie123(224)

Question 547239: Solve by the elimination method.
7r-3s=3
3r+7s=51
I think there is no solution but I'm not sure if I'm correct.
Click here to see answer by josmiceli(19441)

Question 547347: I need help A.S.A.P. for my homework!
5(3-2n)+5n=65 All it says is 'Solve the equation and then check the solution. Show your work.'
I tried using the distributive property and combinig like terms, but nothing I know is helping!
Click here to see answer by stanbon(75887)

Question 547412: How do you write an equation of this line: The slope 3/5 and the y-intercept (0,4).
Click here to see answer by josmiceli(19441)

Question 547422: What's 8t + 3 over 5 = 8? URGENT!!!
Click here to see answer by josmiceli(19441)

Question 547422: What's 8t + 3 over 5 = 8? URGENT!!!
Click here to see answer by Mathwiz6(3)

Question 547248: Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train B is traveling at 90 miles per hour. Train A passes a station at 10:10 P.M. If train B passes the same station at 10:40 P.M. at what time will train B catch up to train A?
Click here to see answer by KMST(5328)

Question 547565: How do u do this ?
Using this equation- d=44t
If t=3 what is d?
If t=8 what is d?
If t=2.5 what is d?
Click here to see answer by Alan3354(69443)

Question 547638: Mr. D�s average of 4 weekly quizzes was 84. What grade should he get on the 5th quiz so that he can raise his average to 86?
Click here to see answer by Alan3354(69443)

Question 547640: 56a^2-15ab+b^2, factor
Click here to see answer by saifoo.khan(162)

Question 547645: city government would like to fence a rectangular playground 14 m by 30 m. How many meters of fencing materials are needed to enclose the playground? Show solution.
Click here to see answer by saifoo.khan(162)

Question 547650: A university got a grant worth $250,000. If 35 % of this amount goes to professional development of the staff, how much will be spent for professional development?
Click here to see answer by Maths68(1474)

Question 547696: 3-2(2x-3)=-5(x+1)
Click here to see answer by mathie123(224)

Question 547678: What is y equal one half x plus two y equal two x minus one
Click here to see answer by mathie123(224)

Question 547759: Which of the following is the symbolic representation for the sentence "y is 8 more than 5 times a number"?
Click here to see answer by mananth(16946)

Question 547815: 2x + 23
Click here to see answer by jim_thompson5910(35256)

Question 547931: y-2=1/2(x-10)
Click here to see answer by jim_thompson5910(35256)

Question 547996: (k plus 10) squared
Click here to see answer by jim_thompson5910(35256)

Question 548127: Solve the rational equation
5/x - 3/14 = 1/2x
Click here to see answer by saifoo.khan(162)

Question 548227: This is a system of equation problem and I am not sure what I need to do as we are just starting them. Could you please help me out? The question is How many days before 17th August is it, if 50 days ago it was four times as many since March 30th?
Click here to see answer by josmiceli(19441)

Question 548337: Solve for x and y
3x - 4y = 32
x + 3y = -11
Click here to see answer by mananth(16946)

Question 548334: Solve for x and y
3x-4y = 32
x = 3y = -11
Click here to see answer by mananth(16946)

Question 548342: Solve for a and b :
-5b - 2a = 46
7a - 5b = 19
Click here to see answer by mananth(16946)

Question 548342: Solve for a and b :
-5b - 2a = 46
7a - 5b = 19
Click here to see answer by stanbon(75887)

Question 547547: Help solve please: 3/2x - x/4x^2-1 = 7/4x+2
Click here to see answer by KMST(5328)

Question 548356: solve by elimination
x + 9y = 75
-x + 5y=37
Click here to see answer by Alan3354(69443)

Question 548346: PLEASE HELP ME
if i have a 90% in a class and i have a test worth 35% of my grade and its out of 30 questions each woth 1pt what would be the minnimum score i could get on it to keep a 90%
i also have 962pts out of 1076pts in the class IF THAT EVEN MATTERS
Click here to see answer by KMST(5328)

Question 548530: I need help factoring the trinomial t^2-24t+135
I got the answer (t-27) (t-3) but when you use the FOIL method to check you get t^2-30t+135. I think that all I have to do is switch some signs but I don't know how to do that.
Click here to see answer by jim_thompson5910(35256)

Question 548526: 2x+7=15
x/3-5=-1
30=16+1/5x
7+2/3x=-1
22=18-1/4x
-7x+4x=9
3x-7+x=5
12(2-x)=6
-4/9(2x-4)=48
4x/3+3=23
-10=1/2x+x
55x-3(9x+12)=-64
9x-5(3x-12)=30
Please help me out its my first year in algebra and my teacher doesn't help us at all and wont show us how to work the problems I'm really stumped
Click here to see answer by Edwin McCravy(20055)

Question 548539: i need help figuring out what steps to take for solving 5/13-2x=-8/13?
Click here to see answer by mananth(16946)

Question 548606: Can this be made into an equation.
Tom has 51 cents MORE than Jerry. On the way home both spend the SAME amount on candy.
When they get home Tom has 64 cents and Jerry has 13 cents. Solve for either, money each spent,
total money spent or the total Tom and Jerry had before buying candy.
Click here to see answer by stanbon(75887)

Question 548645: 2n-8= 3n-16+8
Click here to see answer by jim_thompson5910(35256)

Question 548644: 11x=x+460

Click here to see answer by jim_thompson5910(35256)

Question 547897: 12x-14=9x+10
Click here to see answer by jim_thompson5910(35256)

Question 548704: What is the answer to 8n-207n=-6
What is the answer to 4(s+8)-50-s=3(s+6)
what is the answer to -8s=17
what is the answer to 9/3+9/5=32/15
what is the answer 5p-1=p+7
Click here to see answer by jim_thompson5910(35256)

Question 548697: Can you please show the work on this for me?
x=2
y=-4
the answer is -80
2x^2+3xy-4y^2
I can't get to -80 and not sure how to do the 3xy part?
Thank you!
Click here to see answer by bucky(2189)

Question 548821: How do you solve:
3x + 1 = x + 3
next step - 1 - 1
next step 3x = x + 2
what's next?
Click here to see answer by rfer(16322)

Question 548821: How do you solve:
3x + 1 = x + 3
next step - 1 - 1
next step 3x = x + 2
what's next?
Click here to see answer by stanbon(75887)

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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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