Find the Solution of the systems of equations
2x+4y=-16
-2+2y=-2

Two lines parallel to a third line are parallel to each other. always sometimes or never

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

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?