Algebra help, 10 points fast?
817306
Number of dimes = x\nNumber of nickels = x + 7\nNumber of quarters = 40 - x - (x + 7) = 40 -7 -2x = 33 -2x\n\n10x + 5(x +7) + 25(33 -2x) = 405\n10x + 5x + 35 + 825 - 50x = 405\n825  + 35 - 405 = 50x - 10 x - 5 x\n455 = 35 x\nx = 455/35 = 13\nNumber of dimes = 13\nNumber of nickels = 20\nNumber of quarters = 7\n\nCheck: Does 13 * 10 + 20 * 5 + 7 * 25 = 405?\n\n130 + 100 + 175 = 405, so the answer is correct.
778763
1) (a - b)(x - y)\n2) (x^9 + y^3)(x^9 - y^3)\n3) (6x + 5)(x + 8)\n4) (x - 9)(x - 7)
747439
(5)(5)-2(5)(-4)+(-4)(-4)\n=25-(-40)+(16)\n=25+40+16\n=81\n\nDon't forget that (-)(-)=(+) and (-)(+)=(-).\n\nGood luck!
895464
Don't panic, you can do this...\n\nJust start by distributing the numbers through the parentheses:\n5(2x-3)=2(-3x-2)+5\n10x - 15 = -6x -4 + 5\n\nNow group letters on one side and numbers on the other, start by adding 15 to both sides:\n10x = -6x - 4 + 5 + 15\n10x = -6x + 16\n\nNow add 6x to both sides:\n10x + 6x = 16\n16x = 16\n\nNow divide both sides by 16:\nx = 1\n\nIf you did it correctly, you should be able to plug x = 1 back into the equation and get a valid statement:\n\n5(2(1) - 3) = 2(-3(1) - 2) + 5\n5(2 - 3) = 2(-3 - 2) + 5\n5(-1) = 2(-5) + 5\n-5 = -10 + 5\n-5 = -5 <-- check\n\nSo x = 1 is the correct answer.
800297
15(-10) +4x = -x +10(-10)\n5 +4x(-4x)= -x+(-4x)\n5= -5x\nx= -1\n\n4(2x - 6) = x + 2\n8x (-x)- 24= x (-x) + 2\n7x - 24 (+24)= 2(+24)\n7x =26\nx = 3.7\n\n2(x+5) + 1 = 3 (x - 1) + 4\n2x+10 +1=3x-3+4\n2x+11=3x+1\n10=x\n\n- 3n + 12 + n = 22 \n-2n +12 = 22\n-2n= 10\nn= -5
857682
The midpoint of A and B is (15+7)/2 = 11.\nIf C = 11 then AC =BC.\nTherefore AC < BC  for 11<C<15
104175
f=thanx\ng=for\nx=the\ny=two\nz=points\n\nTell your teacher you need some help with your algebra.
965349
I believe you meant (2x^2 - 3x - 2 )/ (10 + x - 3x^2) right?\n\nWell we can rearrange the problem to look like (2x^2 - 3x - 2 )/ (- 3x^2+ x +10)\n\nWe now factor out the top and factor out the bottom.\n[(2x +1) (x-2)] / [(-3x-5)(x-2)]\n\nSince this is a fraction, we can cancel out the (x-2) because it is on top and the bottom.\n\nWe are left with:\n(2x +1) / (-3x-5)\n\nI think this is what you wanted, good luck and be careful of how you write your notation!
588927
easy.. -1 , -2 , 1,2,3.\n\n-1 x -2 =2\n2x2x3 = 12
62277
first, distribute the 2a to the things in the parentheses:\n\n5a + (2a * 5 - 2a * b)\n\nthen, follow pemdas:\n\n5a + 10a - 2ab\n\nwhich equals:\n\n15a - 2ab
1147051
Use pythagorean theorem\n(2x)^2 + x^2 = 10^2\n4x^2 + x^2 = 100\n5x^2 = 100\nx^2 = 20\nx = sqrt(20)\nx = 2sqrt(5)\nArea = (1/2)(2x)(x)\n= (1/2)(2*2sqrt(5))(2sqrt(5))\n= (1/2)(4*2*5)\n = 20
516830
http://www.gateways2learning.com/Algebra/Algebra.htm\n\nAlso try here.......\n\nYou may want to reconsider having it solve the answer for you, always know how to do the breakdown, it will help you to know "how" to go about it when you take a test.\n\nGood luck.....................
940363
About Me\nMember since: October 03, 2006\nTotal points: 100 (Level 1)\nPoints earned this week:\nTotal answers:\nBest answers:\n\nI need math help again... PLEASE HELP! I m desperately in need.?\n\nAnswer PARTB and PART C in the space provided. Evaluation of your solution to each problem will be based on the following.\n\n*A correct mathematical method for solving the problem is shown\n\n*The final answer is accurate and a check of the answer is shown where asked for by the question.\n\nDetermine if the equation is a linear equation, and if it is, write in standard form.\n\na. 5x+1=3y\n\nb. y=2x   x=y/2\n\nc. 4(2y-x)=1  8y-4x=1\n\nd. 25x-2y+2=0\n\ne. 2x-5y/2=7x\n\n2. a. f(x)= x (exponent 2)+2x+1 f(0),f(2)\n\nb. f(x)=2x-5 f(3),f(-3)\n\nc. f(x)=(-3x)exponent 2 f(0),f(-1)\n\nd. f(x)=2x(exponent 3)+4 f(0),f(-1)\n\ne. f={(1,5),(3,7),(5,9),(7,11)} f(3),F(7)
972476
........._______________\nx - 5 ) x³ - 3x² - 13x + 15 ( x²\n......... x³ - 5x²\n......... -------- ....↓\n............... 2x² - 13x ....... ( 2x\n............... 2x² - 10x\n............... ----------- ....↓ \n............... ....... -3x + 15. (-3\n............... ....... -3x + 15\n............... ....... -----------\n............... ....... -----------\n\nSo P(x) = x³ - 3x² - 13x + 15\n= (x - 5)(x² + 2x - 3)
953940
Hi again \n\nY = √2x – 3 \n2x – 3 = y ²\nX =( y ² + 3 )/ 2\nf –¹ (x)  =( y ² + 3 )/ 2  =>   f –¹ (x)  = (x ² + 3 )/ 2   &  x ≥ 0 \n\nGood Luck \n try to solve them yourslef again if you got wrong , am sure you can solve them correctly , if you just try your best
954300
ok\nso its factoring.this is hella easy.10x+40 is 10(x+4)\nso the answer is 10(x+4)there you go
705155
10 + 6x = 4x - 4\n2x = -14\nx = -7