Write and solve an equation to find Marys. Mary is 6 years older than Ellen. Jim is 5 years older than Mary. If their total combined age is 41. How old is Ellen?

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

X+ y = 5 ; x - y =3 solve using linear combination

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges