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# Recent problems solved by 'user_dude2008'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859, >>Next

 Expressions-with-variables/278255: v=1/3bh solve for h solve for the indicated variable1 solutions Answer 202492 by user_dude2008(1861)   on 2010-03-07 20:28:48 (Show Source): You can put this solution on YOUR website!v=1/3bh 3v=bh 3v/b=h Answer: h=3v/b
 Trigonometry-basics/278245: graph each function be sure to label key points and show at least two cycles. 1. y=cot(pi/4x) 2. y= -3cot(1/2x)-21 solutions Answer 202486 by user_dude2008(1861)   on 2010-03-07 20:17:46 (Show Source): You can put this solution on YOUR website!1. y=cot(pi/4x) 2. y=-3cot(1/2x)-2
 Inequalities/276866: wat is 18 < a +191 solutions Answer 201709 by user_dude2008(1861)   on 2010-03-03 20:18:15 (Show Source): You can put this solution on YOUR website!18 < a + 19 18 - 19 < a -1 < a a > -1
 absolute-value/276796: what is 2+31 solutions Answer 201672 by user_dude2008(1861)   on 2010-03-03 18:05:39 (Show Source): You can put this solution on YOUR website!2+3=5
 Polynomials-and-rational-expressions/276795: what is 64-9y^61 solutions Answer 201670 by user_dude2008(1861)   on 2010-03-03 18:04:42 (Show Source): You can put this solution on YOUR website!64-9y^6 = (8+3y^3)(8-3y^3)
 Divisibility_and_Prime_Numbers/276719: prime numbers between 16 and 541 solutions Answer 201624 by user_dude2008(1861)   on 2010-03-03 16:25:44 (Show Source): You can put this solution on YOUR website!prime numbers between 16 and 54: 17, 19, 23, 29, 31, 37, 41, 43, 47, 53
 logarithm/276732: 3log27 8 Base is 27 exponent is 8 1 solutions Answer 201623 by user_dude2008(1861)   on 2010-03-03 16:23:31 (Show Source): You can put this solution on YOUR website! Answer:
 Human-and-algebraic-language/276652: 50 increased by 20%=1 solutions Answer 201595 by user_dude2008(1861)   on 2010-03-03 13:39:15 (Show Source): You can put this solution on YOUR website!50 increased by 20% = 50+50*(0.2) = 50*(1.2) = 60
 Polynomials-and-rational-expressions/276651: (24+3)/(2x+1) Can you help me with this, please? Thanks1 solutions Answer 201594 by user_dude2008(1861)   on 2010-03-03 13:38:32 (Show Source): You can put this solution on YOUR website! Answer:
 Exponential-and-logarithmic-functions/276650: 5^(x^2 + x) = 1 is the correct answer x=0?1 solutions Answer 201591 by user_dude2008(1861)   on 2010-03-03 13:36:02 (Show Source): You can put this solution on YOUR website!5^(x^2 + x) = 1 5^(x^2 + x) = 5^0 x^2+x=0 x(x+1)=0 x=0 or x+1=0 x=0 or x=-1 Answers: x=0 or x=-1
 Expressions-with-variables/276640: I don't know where to begin with this one. {2(1-6)+10}^2divided by(-6)-3^3 Please help.1 solutions Answer 201587 by user_dude2008(1861)   on 2010-03-03 13:23:40 (Show Source): You can put this solution on YOUR website![{2(1-6)+10}^2]/{(-6)-3^3} [{2(-5)+10}^2]/{-6-3^3} [{-10+10}^2]/{-6-3^3} [{0}^2]/{-6-3^3} 0/{-6-3^3} 0 Answer: [{2(1-6)+10}^2]/{(-6)-3^3} = 0
 Rational-functions/276624: Find the equation of the line that goes through (-5,9) and is parallel to y=-13 Write the equation in the form x=a, y=b, or y=mx+b.1 solutions Answer 201576 by user_dude2008(1861)   on 2010-03-03 12:49:10 (Show Source): You can put this solution on YOUR website!equation is y = 9
 real-numbers/276625: Given f(x) = (Ax+5)/(6x-2) If f(1) = 4, find A1 solutions Answer 201575 by user_dude2008(1861)   on 2010-03-03 12:48:40 (Show Source): You can put this solution on YOUR website!f(x) = (Ax+5)/(6x-2) 4 = (A(1)+5)/(6(1)-2) 4 = (A+5)/(6-2) 4 = (A+5)/4 4*4 = A+5 16 = A+5 16-5 = A 11 = A A = 11 <------------------ Answer
 Polynomials-and-rational-expressions/276620: Factor out the GCF. 12x - 18y1 solutions Answer 201571 by user_dude2008(1861)   on 2010-03-03 12:35:42 (Show Source): You can put this solution on YOUR website!12x - 18y = 6(2x-3y)
 Polynomials-and-rational-expressions/276621: Factor each polynomial. 25a^2 - 49b^21 solutions Answer 201570 by user_dude2008(1861)   on 2010-03-03 12:35:19 (Show Source): You can put this solution on YOUR website!25a^2 - 49b^2 = (5a+7b)(5a-7b) ... use difference of squares
 Functions/276619: 18r 4s5t6 _____________ -3r 2st3= 1 solutions Answer 201569 by user_dude2008(1861)   on 2010-03-03 12:34:45 (Show Source): You can put this solution on YOUR website! Answer:
 Triangles/276618: what is the perimeter of a triangle if one leg is 38.5cm, a second leg is y, and the third leg is y+22.5cm? 1 solutions Answer 201568 by user_dude2008(1861)   on 2010-03-03 12:32:17 (Show Source): You can put this solution on YOUR website!Perimeter: P=s1+s2+s3=38.5+y+y+22.5=2y+61 Answer: perimeter is 2y+61 cm
 Linear_Equations_And_Systems_Word_Problems/276617: Please help me solve this word problem: A 98-inch piece of wire must be cut into two pieces. One piece must be 10 inches shorter than the other. How long should the pieces be?1 solutions Answer 201567 by user_dude2008(1861)   on 2010-03-03 12:31:07 (Show Source): You can put this solution on YOUR website!x+y=98 y=x-10 x+y=98 x+x-10=98 2x-10=98 2x=98+10 2x=108 x=108/2 x=54 y=x-10 y=54-10 y=44 Answers: Pieces are 54 inches and 44 inches
 Polynomials-and-rational-expressions/276306: Please help me solve this problem. Thank you. (x^2)^4 X^3 _divided by___ X^5 x^21 solutions Answer 201566 by user_dude2008(1861)   on 2010-03-03 12:29:30 (Show Source): You can put this solution on YOUR website!(x^2)^4 x^3=(x^8)(x^3)=x^11 x^5 x^2=x^7 ------------ { (x^2)^4 x^3 } / {x^5 x^2} = x^11/x^7 = x^(11-7) = x^4 Answer: { (x^2)^4 x^3 } / {x^5 x^2} = x^4
 Inequalities/276207: I am also having trouble with these problems. z/2 > -15 and 10w > -40 1 solutions Answer 201565 by user_dude2008(1861)   on 2010-03-03 12:27:57 (Show Source): You can put this solution on YOUR website!z/2 > -15 z > -15*2 z > -30 <============= Answer ------- 10w > -40 w > -40/10 w>-4 <============= Answer
 Linear-systems/276169: What is the range and domain of the linear regression line y=3.8x+4.51 solutions Answer 201564 by user_dude2008(1861)   on 2010-03-03 12:26:38 (Show Source): You can put this solution on YOUR website!domain and range both set of all real numbers
 Finance/276187: Solve the inequality for x: -3<61 solutions Answer 201563 by user_dude2008(1861)   on 2010-03-03 12:26:07 (Show Source): You can put this solution on YOUR website!x isn't in there
 Equations/276176: p more than q1 solutions Answer 201562 by user_dude2008(1861)   on 2010-03-03 12:25:28 (Show Source): You can put this solution on YOUR website!p more than q ----> p > q
 Trigonometry-basics/276415: Find the period of f(x)=3-2cos(3x+pi). Any help is greatly appreciated.1 solutions Answer 201561 by user_dude2008(1861)   on 2010-03-03 12:24:52 (Show Source): You can put this solution on YOUR website!period is 2pi/3
 Quadratic_Equations/276613: Find the equation of the line with the indicated slope and y intercept. write the final answer in the standard form Ax+By=C1 solutions Answer 201560 by user_dude2008(1861)   on 2010-03-03 12:23:55 (Show Source): You can put this solution on YOUR website!missing info
 Equations/276410: x2 - 3x + 27 = 8x - 3 1 solutions Answer 201559 by user_dude2008(1861)   on 2010-03-03 12:23:27 (Show Source): You can put this solution on YOUR website!x^2 - 3x + 27 = 8x - 3 x^2 - 3x + 27 - 8x + 3 = 0 x^2 - 11x + 30 = 0 (x-6)(x-5) = 0 x-6=0 or x-5=0 x=6 or x=5 <-------------------- Answers
 Systems-of-equations/276609: solve the following systems of equations x+4y=3 (1) x=8-4y(2)1 solutions Answer 201558 by user_dude2008(1861)   on 2010-03-03 12:21:04 (Show Source): You can put this solution on YOUR website!x+4y=3 8-4y+4y=3 8=3 <--------------- Contradiction Answer: No solutions
 Equations/276608: The product of two numbers is 70 one number is 5/7 what is the other number?1 solutions Answer 201557 by user_dude2008(1861)   on 2010-03-03 12:20:25 (Show Source): You can put this solution on YOUR website!(5/7)x=70 5x=70*7 5x=490 x=490/5 x=98 <---------- Answer
 Square-cubic-other-roots/276607: slove using square root property (x-2)^2=121 solutions Answer 201556 by user_dude2008(1861)   on 2010-03-03 12:19:14 (Show Source): You can put this solution on YOUR website!(x-2)^2=12 x-2=+-sqrt(12) x-2=sqrt(12) or x-2=-sqrt(12) x=2+sqrt(12) or x=2-sqrt(12) Answers: x=2+sqrt(12) or x=2-sqrt(12)
 expressions/276553: 8-[(2-4)-(8-9)]1 solutions Answer 201552 by user_dude2008(1861)   on 2010-03-03 12:14:15 (Show Source): You can put this solution on YOUR website!8-[(2-4)-(8-9)] = 8-[(-2)-(-1)] = 8-[-2+1] = 8-[-1] = 8+1 = 9 Answer: 8-[(2-4)-(8-9)] = 9
 absolute-value/276498: What are the values of a and b, if any, where a|b – 2| < 0 ? A. a < 0 and b 2 B. a < 0 and b = 2 C. a 0 and b > 2 D. a > 0 and b < 2 E. There are no such values of a and b. 1 solutions Answer 201551 by user_dude2008(1861)   on 2010-03-03 12:11:38 (Show Source): You can put this solution on YOUR website!b can't equal zero since |2-2|=0 which is not less than zero ---> eliminate choice B |b-2| is positive so a is negative ----> eliminate choices C, D Only answer left is choice A