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√(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

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

a) FFF, FFD, FDF, DFF, DDF,

**DFD**, FDD, DDD P(FFF)=(27/100)^3 P(FFD...1 Answers · Science & Mathematics · 12/12/2010

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

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

...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

...'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 = 162 Answers · Science & Mathematics · 11/12/2009

...: 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

... 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

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