exam Maths Puzzle Numerical Ability

A sales rep for a company estimates that her automobile gasoline consumption averages 28 mpg on highway and 22 mpg in the city. A recent trip covered 627 miles and 24 gallons of ga

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please help me in this
let x have the p.d.f f(x)= (x+2)/18 , -2
Hello out there,I need some help with some tough problems,the first one is,State whether the system is consistent and independent,consistent and dependent,or inconsistent.4x+2y=8 a