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P(z<0.

**22**) = 0.5871 <-------- btw, what's happened to your z-table ?1 Answers · Science & Mathematics · 05/04/2011

**22**/7 is an approximation for pi. The formula for the circumference is 2*pi*r with r being the radius. So,**using**this formula, we have = 2 ***22**/ 7 * 5.25 => 2 ***22**/ 7 * 21 / 4 = (21***22**)/(7*2) = 3*11 = 33 Good luck!8 Answers · Science & Mathematics · 02/02/2009

For #’s 15 –

**22**,**use**the equation: 3x-2y=6 15. Graph...the inverse of the equation. => -2y+3x=6**22**. Evaluate the equation if x=-2...25.f(x)=5x/x+3 => R-{0}**use**f(x)= x^2-x-6/x^2-4x+3 to answer...2 Answers · Science & Mathematics · 24/07/2012

...) = cos^2(A) - sin^2(A). Substituting in A =

**22**°30': cos[2(**22**°30')] = cos^2(**22**°30') - sin^2(**22**°30'). Then...4 Answers · Science & Mathematics · 27/12/2010

A^2-9*A+

**22**Quadratic formula: A = (-b ±√(b²-4ac))/(2a) = ( 9±√( 81 -88))/( 2) negative discriminant = -7; two complex roots: A=4.5± 1.322875656i1 Answers · Science & Mathematics · 25/02/2013

... are related, put them as a sequence : 13, 16, 19,

**22**, 25 Find the first differences : 16 - 13 = 3 19 - 16...1 Answers · Science & Mathematics · 09/03/2010

**22**= 2*114 Answers · Science & Mathematics · 30/10/2009

x^2 - 9x -

**22****Use**Factor theorem basically just sub...2a = -**22**a = -11 therefore x^2 - 9x -**22**= (x+2)(x-11) x= -2 , 11...3x from the equation 3x(x^2 + 2x - 6)**Use**Factor Theorem ...1 Answers · Science & Mathematics · 25/03/2010

...each item increases by 3. The sequence is: 4,7,10,13,16,19,

**22**Now**using**this same logic what is the fifth item? It is 16...3 Answers · Science & Mathematics · 30/04/2008

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