3. 10x + 7y-2z=46
3x-2y+92 =22
5x + y-3z = 28

What is the size of the matrix resulting from

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?