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1. ### Solve √(2x+5)-√(x-1)=2?

√(2x + 5) - √(x - 1) = 2 3x + 4 - 2√(2x + 5)√(x - 1) = 4 9x^2 = 8x^2 + 12x - 20 x^2 - 12x + 20 = 0 (x - 10)(x - 2) = 0 Solutions: x = 2 x = 10

2 Answers · Science & Mathematics · 21/06/2013

2. ### Help me make an algorithm! (DFD)?

I'd never heard of friendly numbers before, but I just checked out the Wikipedia page, and it sounds like your algorithm is supposed to determine if a number is solitary or not. Wikipedia says...

1 Answers · Science & Mathematics · 28/11/2009

3. ### AP Statistics Help? 10 Points for Best Explanation!?

a) FFF, FFD, FDF, DFF, DDF, DFD, FDD, DDD P(FFF)=(27/100)^3 P(FFD...

1 Answers · Science & Mathematics · 12/12/2010

4. ### A portion of an ANOVA summary table is shown below; the table has 4 columns of data with a total number of?

dfN = 3, dfD = 30 df treatments 4-1=3 error = 30 total 34-1 = 33 error always goes to the denominator when you calculate F statistic.

2 Answers · Science & Mathematics · 03/05/2012

5. ### how to enter 2 polynomials in 2 different linked list and then sum them up?

dfds

1 Answers · Science & Mathematics · 24/05/2010

6. ### proof of the Curvature of a plane curve. Very interesting problem!!!?

...parameterization. If we apply a change of parameter =(s) then, by the chain rule, dsdf=dfddsd=(s)dfd dsdg=(s)dgd Missing close brace Missing close brace Thus, we have...

4 Answers · Science & Mathematics · 03/05/2009

7. ### Math Probability: Question Help ME Please!!?

...'s) = individual probabilities multiplied together. P(DFD) = .73 * .27 * .73 = .143 Substitute .73 for each D, and .27 for each...

1 Answers · Science & Mathematics · 30/10/2011

DFn=k-1 where k is the number of groups DFd=N-k where N is the total sample size DFn=4 - 1 = 3 DFd= 20 - 4 = 16

2 Answers · Science & Mathematics · 11/12/2009

9. ### A random sample of 18 women resulted in blood pressure levels with a standard deviation of 23.1 mm Hg?

...: varw <= varm 2) alpha=0.05 dfn= n2-1=22-1=21 dfd=n1-1=18-1 = 17 Hence from tables Fcritical=2...

1 Answers · Science & Mathematics · 12/01/2010

10. ### I have no Idea why this stupid question is making me go blank.?

... FFF, 0.27^3 = 0.019683 For FDD, DDF, DFD: 3 * 0.73 * 0.73 * 0.27 = 3 * 0.143883 = 0.431649 and for DDD = .73^3 = 0...

1 Answers · Science & Mathematics · 13/04/2010