X+2y-2z=-31
4y+2z=0
-x+y-z=-2

solve for x, y,z in systems of equations

F(x)=|x| is shifted down 4 units and to the right 3 units.

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable