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Recent problems solved by 'user_dude2008'

user_dude2008 answered: 1858 problems
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Expressions-with-variables/278255: v=1/3bh solve for h solve for the indicated variable 1 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)-2 1 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 +19 1 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+3 1 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^6 1 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 54 1 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? Thanks 1 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 A 1 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 - 18y 1 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^2 1 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^2 1 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+4.5 1 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<6 1 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 q 1 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=C 1 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=12 1 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