Find the maximum value of c=6x+2y with the constraints x is greater than or equal to 0 , x is less than or equal to 5, y is greater than or equal to 0 , 4x-y is less than or equal to 1

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle