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# Recent problems solved by 'Juhi'

 Quadratic_Equations/188092: what is the 14th term in an arthmetic sequence in which the first term is 100 and the common diffence is -4?1 solutions Answer 141785 by Juhi(44)   on 2009-03-31 10:41:04 (Show Source): You can put this solution on YOUR website!we have a=100 and d=-4 nth term = a+(n-1)d 14th term = a+(14-1)d = 100 + 13(-4) = 100-52 = 48
 Linear_Algebra/188202: x=2y+1 3x+y=171 solutions Answer 141784 by Juhi(44)   on 2009-03-31 10:36:48 (Show Source): You can put this solution on YOUR website!x=2y+1 3x+y=17 - (i) putting x=2y+1 in (i), 3(2y+1) + y = 17 6y + 3 + y = 17 7y = 17 - 3 7y = 14 y = 14/7 y = 2 putting value of y in (i), 3x + 2 = 17 3x = 15 x = 5 hence, x=5 and y=2
 Probability-and-statistics/189026: I have the word constituion. A letter is selected at radndom. What is the probability that is a vowel. 1 solutions Answer 141783 by Juhi(44)   on 2009-03-31 10:20:16 (Show Source): You can put this solution on YOUR website!total no. of outcomes = 26 no. of favorable outcomes = 5 (a,e,i,o,u) probability of getting a vowel = 5/26
 Matrices-and-determiminant/168333: use cramers rule to solve the system.. 3x+2y=-2 5x+4y=81 solutions Answer 124327 by Juhi(44)   on 2008-11-20 10:23:06 (Show Source): You can put this solution on YOUR website!3x+2y=-2 - (i) 5x+4y=8 - (ii) multipying (i) by 2, we get 6x + 4y = -4 - (iii) subracting (ii) from (iii), 6x + 4y - 5x - 4y = 8 + 2 x = 10 putting x=10 in (i), 3(10) + 2y = -2 30 + 2y = -2 2y = - 2 - 30 2y = -32 y = -16 x = 10 y = -16
 Quadratic_Equations/167551: Solve ( x2 – 2x )( x + 3) = -2x ( x + 1) 1 solutions Answer 123466 by Juhi(44)   on 2008-11-14 09:34:32 (Show Source): You can put this solution on YOUR website!( x2 – 2x )( x + 3) = -2x ( x + 1) x3 + 3x2 - 2x2 -6x = -2x2 - 2x x3 + 3x2 - 4x = 0
 Linear-systems/133070: This question is from textbook Please solve -5/6x < or equal to 3/4 +8/3x1 solutions Answer 98277 by Juhi(44)   on 2008-03-30 05:59:55 (Show Source): You can put this solution on YOUR website!-5/6 - 8/3x = 3/4 -21/6x = 3/4 -x = 3/4 * 6/21 x = -3/14
 Polygons/133840: Can you help me solve this problem: -2xsquared-5x-5 -(-5xsquared+3x-3) 1 solutions Answer 98276 by Juhi(44)   on 2008-03-30 05:49:42 (Show Source): You can put this solution on YOUR website!-2xsquare - 5x - 5 + 5xsquare - 3x + 3 -2xsquare + 5xsquare - 5x - 3x -5 +3 3xsquare - 8x -2
 Linear-equations/133816: is y= 1/2x + 4 a linear equation?1 solutions Answer 98275 by Juhi(44)   on 2008-03-30 05:45:09 (Show Source): You can put this solution on YOUR website!yes, it is a linear equation in 2 variables
 Equations/134027: can you help to determine the value of X -9 (6+X) -2X = -101 solutions Answer 98274 by Juhi(44)   on 2008-03-30 05:42:52 (Show Source): You can put this solution on YOUR website!-9(6 + x) - 2x = -10 -54 - 9x - 2x = -10 -11x = 44 x = -44/11 x = -4
 Equations/134255: x-4=3/4(x-8) change to standard from1 solutions Answer 98273 by Juhi(44)   on 2008-03-30 05:38:23 (Show Source): You can put this solution on YOUR website!x - 4 = 3/4 (x - 8) x - 4 = 3/4x - 6 x - 3/4x = -6 + 4 x/4 = -2 x = -8
 Polynomials-and-rational-expressions/134318: fully factorise the following expressions 2a-8b 3ab-9bc+12abc 15a squared b-10ab3c1 solutions Answer 98272 by Juhi(44)   on 2008-03-30 05:34:18 (Show Source): You can put this solution on YOUR website!1) 2(a - 4b) 2) 3b(a - 3c + 4ac) 3) 5ab(3a - 2bc)
 expressions/105036: This question is from textbook Algebra 2/3 (6x + 3) = 4x + 21 solutions Answer 76604 by Juhi(44)   on 2007-10-20 11:29:57 (Show Source): You can put this solution on YOUR website!4x + 2 = 4x + 2 4x - 4x = 2 - 2 0
 Polynomials-and-rational-expressions/105222: Factor completely: 27x3 – 8y3 Must use the “difference of two cubes method” 1 solutions Answer 76603 by Juhi(44)   on 2007-10-20 11:26:17 (Show Source): You can put this solution on YOUR website!(3x)3 - (2y)3 (3x - 2y) ( 9x2 + 6xy + 2y2)
 Rational-functions/105234: Express the phrase as a ratio in lowest terms: 7 to 10.5 1 solutions Answer 76602 by Juhi(44)   on 2007-10-20 11:23:33 (Show Source): You can put this solution on YOUR website!7 to 10.5 1:1.5
 Inverses/50993: I really couldn't find a catagory for my pre- Algebra problem sorry. Well here is my problem x-21=-2. Thank you for your time:) x=-2+21 x=191 solutions Answer 34046 by Juhi(44)   on 2006-09-07 03:07:06 (Show Source): You can put this solution on YOUR website!x - 21 = -2 x = - 2 + 21 = 19
 Quadratic_Equations/51014: The length of a rectangle is 2 cm more than twice its width. If the perimeter of the rectangle is 52 cm, find the dimensions of the rectangle.1 solutions Answer 34045 by Juhi(44)   on 2006-09-07 03:03:18 (Show Source): You can put this solution on YOUR website!width=x length=2x+2 Perimeter= 2(2x+2+x) 52=4x+4+2x 48=6x 8=x width= 8 cm length= 18 cm
 expressions/49890: I am having trouble with this question: Solve: 3t-4(5-t)=t-8 ISBN:06183726281 solutions Answer 33135 by Juhi(44)   on 2006-08-27 07:34:26 (Show Source): You can put this solution on YOUR website!3t - 4(5 - t)= t - 8 3t - 20 + 4t = t - 8 3t + 4t - t = -8 + 20 6t = 12 t = 12/6 = 2
 Linear-systems/49446: Can someone help me on this problem? I need to solve and check the following equation: 12x - 6 = 11x Thanks, Sher1 solutions Answer 33099 by Juhi(44)   on 2006-08-26 08:01:38 (Show Source): You can put this solution on YOUR website!12x - 6 = 11x 12x - 11x = 6 x = 6
 Equations/49443: This question is from textbook beginning algebra 2/5x-6=121 solutions Answer 33098 by Juhi(44)   on 2006-08-26 07:47:18 (Show Source): You can put this solution on YOUR website!2/5x - 6 = 12 2/5x = 12 + 6 2/5x = 18 x = 5/2 * 18 = 5*9 = 45
 Equations/49462: 5x/7 + 2= x/2 -4 This is 5x over 7 as a fraction plus 2= x over 2 as a fraction minus 4. Solve for x1 solutions Answer 33097 by Juhi(44)   on 2006-08-26 07:43:49 (Show Source): You can put this solution on YOUR website!5x/7 - x/2 = -4 - 2 3x/14 = -6 x = 14/3 * 6 = 14 * -2 = -28
 Quadratic_Equations/49470: Solve by using the quadratic formula. x2 – 15x + 54 = 01 solutions Answer 33096 by Juhi(44)   on 2006-08-26 07:37:07 (Show Source): You can put this solution on YOUR website!xsquare - 15x + 54 xsquare - 9x - 6x + 54 x(x-9) - 6(x-9) (x-9)(x-6)
 Equations/49494: 3x-x-5=15 how you came up with the 2 and 201 solutions Answer 33095 by Juhi(44)   on 2006-08-26 07:30:57 (Show Source): You can put this solution on YOUR website!3x - x - 5 = 15 2x - 5 = 15 2x = 15 + 5 2x = 20 x = 20/2 = 10
 Linear-systems/49497: 6x-1 over 5, minus, 2x over 3, equals 3. I am solving for x. I tried using the LCM of 15 but every answer I come up with doesn't equal out. 1 solutions Answer 33094 by Juhi(44)   on 2006-08-26 07:19:51 (Show Source): You can put this solution on YOUR website!3(6x-1)-5(2x)=3 18x - 3 - 10x = 3 18x - 10x = 3 + 3 8x = 6 x = 6/8 = 3/4
 Equations/49499: 2(x+1)-3x=3(3+2x)1 solutions Answer 33093 by Juhi(44)   on 2006-08-26 07:11:47 (Show Source): You can put this solution on YOUR website!2(x+1)-3x = 3(3+2x) 2x+2-3x = 9+6x -x+2 = 9+6x -x-6x = 9-2 -7x = 7 x = 7/-7 = -1
 Graphs/49627: This question is from textbook algreba connectins 2x-3 over 4 = x over 81 solutions Answer 33072 by Juhi(44)   on 2006-08-26 00:43:45 (Show Source): You can put this solution on YOUR website!2x-3/4 = x/8 LCM of 4 and 8 = 8 2(2x - 3) = x 4x - 6 = x 4x - x = 6 3x = 6 x = 6/3 = 2
 Equations/49651: solve for x 9x/4=-72/20 9x over 4 (as a fraction) = -72 over 20 (as a fraction)1 solutions Answer 33009 by Juhi(44)   on 2006-08-24 09:22:36 (Show Source): You can put this solution on YOUR website!9x/4 = -72/20 x = -72/20 * -4/9 = 8/5
 Linear-equations/49671: This question is from textbook solve: 7x + 12 = 3x - 4 solve: 6(a - 5) = 4(a + 1) solve: 4(x + 3) = 12 solve: n divided by 5 + 10 = 0 solve: 3x - 7 = 4x + 51 solutions Answer 33008 by Juhi(44)   on 2006-08-24 09:00:34 (Show Source): You can put this solution on YOUR website!7x + 12 = 3x - 4 7x - 3x = -4 -12 4x = -16 x = -16/4 = -4 6(a - 5) = 4(a + 1) 6a - 30 = 4a + 4 6a - 4a = 4 + 30 2a = 34 a = 34/2 = 17 4(x + 3) = 12 4x + 12 = 12 4x = 12 - 12 x = -4 n/5 + 10 = 0 n/5 = -10 n = -10*5 = -50 3x - 7 = 4x + 5 3x - 4x = 5 + 7 -x = 12 x = -12
 Equations/49676: 2x/3 as a fraction minus 5= 5x/4 as a fraction +9 Solve for x. 1 solutions Answer 33007 by Juhi(44)   on 2006-08-24 08:45:56 (Show Source): You can put this solution on YOUR website!2x/3 - 5 = 5x/4 + 9 2x/3 - 5x/4 = 9 + 5 -7x = 14 x = 14/-7 = -2
 test/49697: This question is from textbook Subtracting: Subtract 37 from -21. The answer is -58, but I don't know why! Subtract 19 from -7. Subtract -25 from 9. Subtract -31 from -5. I need help with all of the above. If you can show the work on how you got the answer? I need to have this done by today so pleeeeeeeeeeease help me asap!1 solutions Answer 33001 by Juhi(44)   on 2006-08-24 03:19:34 (Show Source): You can put this solution on YOUR website!19 from -7 = 12 -25 from 9 = -14 -31 from -5 = -36
 Equations/49709: 1/3(3+9x)=7/4(28-12x)1 solutions Answer 33000 by Juhi(44)   on 2006-08-24 03:05:22 (Show Source): You can put this solution on YOUR website!1/3(3+9x) = 7/4(28-12x) 1+3x = 49-21x 3x+21x = 49-1 24x = 48 x = 48/24 = 2
 Equations/49654: 2x/3-5=5x/4+9 solve for x= 2x over 3 as a fraction - 5= 5x over 4 as a fraction +91 solutions Answer 32973 by Juhi(44)   on 2006-08-23 08:38:12 (Show Source): You can put this solution on YOUR website!2x/3 - 5x/4 = 9 + 5 -7x/12 = 14 -x = -14 * 12/7 = -24