- A club consists of 25 members. 4 are chosen to go on a trip. how many ways can this be done?

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Square root of 5.10 = 1.000+x/1.000-x
I know the answer is 0.3861 I just don't know the steps to getting this answer. Please help.? (2x10 negative 4) (2x10 negative 1)? The vector A=axi +ayj lies in which coordinate? Find the equation of the plane passing through the points (1,1,2) and (2,4,3) and perpendicular to the plane x-3y+7z+5=0.help me out thanks? A tank is a vertical cylinder with inside diameter of 6ft and a height of 15ft.?