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Recent problems solved by 'user_dude2008'

user_dude2008 answered: 1858 problems
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Complex_Numbers/285349: How do you solve: (x - y) + (2x + y)i = -3 + 9i Thanks! 1 solutions Answer 206862 by user_dude2008(1861)   on 2010-03-25 18:22:01 (Show Source): You can put this solution on YOUR website! (x - y) + (2x + y)i = -3 + 9i x-y=-3 2x+y=9 --------- 3x=6 x=2 y=5 Answers: x=2, y=5

Linear-systems/285000: y=2x-3 y=-2x+1 1 solutions Answer 206700 by user_dude2008(1861)   on 2010-03-24 21:26:05 (Show Source): You can put this solution on YOUR website! y=2x-3 y=-2x+1 2x-3=-2x+1 2x+2x=1+3 4x=4 x=1 <------------ x answer y=2(1)-3=2-3=-1 <--- y answer

Polynomials-and-rational-expressions/285035: solve equation sqrt( x-2 )= 2 1 solutions Answer 206698 by user_dude2008(1861)   on 2010-03-24 21:23:25 (Show Source): You can put this solution on YOUR website! sqrt( x-2 )= 2 x-2=4 x=6 <-------- Answer

Equations/284854: I am having trouble with my business math homework could someone please help me? The question is Solve 5/8x + 3/5=8 I did ask one before but I forgot to put all the numbers in sorry. I would like to thank you in advance for all the help you have giving me so far. 1 solutions Answer 206654 by user_dude2008(1861)   on 2010-03-24 16:23:50 (Show Source): You can put this solution on YOUR website! 5/8x + 3/5=8 25x + 24=320 25x = 320-24 25x = 296 x=296/25 <-----------------Answer

Proportions/284914: a picture is 12ft.x9ft what are the dimensions in yards 1 solutions Answer 206653 by user_dude2008(1861)   on 2010-03-24 16:21:43 (Show Source): You can put this solution on YOUR website! 1 yd = 3 ft 4 yd = 12 ft 3 yd = 9 ft 12ft x 9ft = 4yd x 3yd = 12 square yds

Polynomials-and-rational-expressions/284853: Simplify by removing factors of 1 (z^2-64)/(8-z) the simplified form is 1 solutions Answer 206652 by user_dude2008(1861)   on 2010-03-24 16:20:03 (Show Source): You can put this solution on YOUR website! (z^2-64)/(8-z) = -[(z+8)(z-8)]/(z-8) = -(z+8) = -z-8 Answer: (z^2-64)/(8-z) = -z-8

Functions/284898: Given the fuction h described by h(x)=5x, find each of the following: a) h(-9) b) h(11) c) h(35) a=___ b=___ c=___ 1 solutions Answer 206651 by user_dude2008(1861)   on 2010-03-24 16:18:41 (Show Source): You can put this solution on YOUR website! a) h(-9)=5(-9)=-45 b) h(11)=5(11)=55 c) h(35)=5(35)=175

absolute-value/284912: 2x + 5 <7 1 solutions Answer 206650 by user_dude2008(1861)   on 2010-03-24 16:17:12 (Show Source): You can put this solution on YOUR website! 2x + 5 < 7 2x < 7-5 2x < 2 x < 2/2 x < 1

absolute-value/284911: 1 - 2x + 6 = 9 1 solutions Answer 206648 by user_dude2008(1861)   on 2010-03-24 16:15:54 (Show Source): You can put this solution on YOUR website! 1 - 2x + 6 = 9 - 2x + 7 = 9 - 2x = 9-7 - 2x = 2 x=2/(-2) x=-1 <------------------- Answer

Equations/284568: Please help me with this: 3(s + 22) = 4(s + 12) 1 solutions Answer 206465 by user_dude2008(1861)   on 2010-03-23 20:13:55 (Show Source): You can put this solution on YOUR website! 3(s + 22) = 4(s + 12) 3s + 66 = 4s + 48 66 - 48 = 4s - 3s 18 = s Answer: s=18

decimal-numbers/284607: (0.0069)(0.007) 1 solutions Answer 206463 by user_dude2008(1861)   on 2010-03-23 20:11:47 (Show Source): You can put this solution on YOUR website! (0.0069)(0.007) = 0.0000483

logarithm/284059: evaluate: logbase(6)(18)- logbase(6)(3) 1 solutions Answer 206160 by user_dude2008(1861)   on 2010-03-22 18:34:33 (Show Source): You can put this solution on YOUR website! log(6)(18)-log(6)(3)=log(6)(18/3)=log(6)(6)=1 Answer: log(6)(18)-log(6)(3)=1

Trigonometry-basics/284073: sin 112.5 degrees 1 solutions Answer 206142 by user_dude2008(1861)   on 2010-03-22 17:27:59 (Show Source): You can put this solution on YOUR website!

Square-cubic-other-roots/284061: States the Quotient Rule for square roots. 1 solutions Answer 206140 by user_dude2008(1861)   on 2010-03-22 17:26:38 (Show Source): You can put this solution on YOUR website!

test/284026: Hi there, I was wondering if I could get help with this calculus question: compare and contrast d/dx and d/dy of the function 4sinx. Thanks! j 1 solutions Answer 206130 by user_dude2008(1861)   on 2010-03-22 17:04:32 (Show Source): You can put this solution on YOUR website! d/dx(4sin(x))=4cos(x) d/dy(4sin(x))=0

Polynomials-and-rational-expressions/284040: Yabbas (Y) are inversely proportion to the number of Dabbas (D) a) Write a general equation that summarizes this relationship. b) When 51 Dabbas produce 3 Yabbas, which is the constant of proportionality? c) How many Dabbas would be needed in order to produce 17 Yabbas? 1 solutions Answer 206125 by user_dude2008(1861)   on 2010-03-22 16:57:05 (Show Source): You can put this solution on YOUR website! a) b) ----> c) <-------------- Answer

Polynomials-and-rational-expressions/284030: Write an example of a quadratic equation. 1 solutions Answer 206124 by user_dude2008(1861)   on 2010-03-22 16:54:39 (Show Source): You can put this solution on YOUR website!

Trigonometry-basics/284037: sin^2 45degrees + cos^2 30degrees 1 solutions Answer 206123 by user_dude2008(1861)   on 2010-03-22 16:53:28 (Show Source): You can put this solution on YOUR website! Answer:

Polynomials-and-rational-expressions/283713: This was all I was given: The way that we write numbers is based on the powers of 10. We know that ; 10^0=1 10^1=10 10^2=100 10^3=1000 etc. we also know that 2 times 10^1=20 Using this information write the number 6734 as a polynomial. When you substitute 10 for x you will get the number 6734. 1 solutions Answer 205891 by user_dude2008(1861)   on 2010-03-21 21:11:51 (Show Source): You can put this solution on YOUR website!

Exponential-and-logarithmic-functions/283705: 6^(log6)3 1 solutions Answer 205879 by user_dude2008(1861)   on 2010-03-21 20:51:01 (Show Source): You can put this solution on YOUR website!

Functions/283620: please help me find the domain range and asymtope of this function f(x)= -e^-x 1 solutions Answer 205834 by user_dude2008(1861)   on 2010-03-21 18:40:12 (Show Source): You can put this solution on YOUR website! f(x)= -e^-x Domain: All real numbers Range: y < 0 Asymptote: y = 0 Graph:

Functions/283617: please help me find the domain range and asymtope of this function : 1 solutions Answer 205833 by user_dude2008(1861)   on 2010-03-21 18:38:41 (Show Source): You can put this solution on YOUR website! Domain: All real numbers Range: y < 0 Asymptote: y=0

logarithm/283616: Solve Log6(x+3) + Log6(x-2) = 1 * 6 is the base for both logs 1 solutions Answer 205831 by user_dude2008(1861)   on 2010-03-21 18:36:05 (Show Source): You can put this solution on YOUR website! Log6 (x+3) + Log6 (x-2) = 1 Log6 [(x+3)(x-2)] = 1 (x+3)(x-2) = 6^1 (x+3)(x-2) = 6 x^2+x-6 = 6 x^2+x-12=0 (x+4)(x-3)=0 x+4=0 or x-3=0 x=-4 or x=3 x=-4 is extraneous Answer: Only solution is x=3

Quadratic_Equations/283605: How do you solve y= 3x(squared) + 6x 1 solutions Answer 205829 by user_dude2008(1861)   on 2010-03-21 18:17:18 (Show Source): You can put this solution on YOUR website! y=3x^2+6x 3x^2+6x=0 3x(x+2)=0 3x=0 or x+2=0 x=0 or x=-2 <=-------------- Answers

logarithm/283604: 2^1-x = 9^x+1 --> solve for x using logarthimis 1 solutions Answer 205828 by user_dude2008(1861)   on 2010-03-21 18:14:55 (Show Source): You can put this solution on YOUR website!

Travel_Word_Problems/283591: The length of the minute hand on the clock is 7 inches. What is the most reasonable measure of the distance that the tip of the minute hand travels in one hour? 1 solutions Answer 205827 by user_dude2008(1861)   on 2010-03-21 18:08:58 (Show Source): You can put this solution on YOUR website! Answer: travels about 43.9823 inches in one hour

logarithm/283586: . Use a calculator to find an approximation to the nearest ten-thousandth. 10-1.21357 1 solutions Answer 205824 by user_dude2008(1861)   on 2010-03-21 18:07:35 (Show Source): You can put this solution on YOUR website!

Systems-of-equations/283597: 7/x=0 how do I solve this? 1 solutions Answer 205817 by user_dude2008(1861)   on 2010-03-21 18:01:23 (Show Source): You can put this solution on YOUR website! 7/x=0 7=0*x 7=0 <----- Contradiction Answer: No solutions

Graphs/283592: Please help me solve and graph this inequality on a number line: -3x+4≥ 2x+19 1 solutions Answer 205816 by user_dude2008(1861)   on 2010-03-21 18:00:21 (Show Source): You can put this solution on YOUR website! -3x+4≥ 2x+19 -3x-2x≥19-4 -5x ≥ 15 x ≤ 15/(-5) x ≤ -3 Answer: x ≤ -3

Polynomials-and-rational-expressions/283564: Factor out the GCF in each expression. (x - 2)x -(x - 2) Factor out the GCF in each expression, then factor out the opposite of the GCF. 12u^5v^6 + 18u^2^v3 - 15u^4v^5 1 solutions Answer 205813 by user_dude2008(1861)   on 2010-03-21 17:54:58 (Show Source): You can put this solution on YOUR website! (x - 2)x -(x - 2) = (x-2)(x-1) 12u^5v^6 + 18u^2^v3 - 15u^4v^5 = 3u^2v^3(4u^3v^3+6-5u^2v^2) 12u^5v^6 + 18u^2^v3 - 15u^4v^5 = -3u^2v^3(-4u^3v^3-6+5u^2v^2)

logarithm/283582: Express as a product. logbt8 1 solutions Answer 205810 by user_dude2008(1861)   on 2010-03-21 17:51:05 (Show Source): You can put this solution on YOUR website!