Given the vectors a= (-4, 0) and b=(-8, – 9), find 4a and a + b.
Write your answers in component form?
4a =
a + b=

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

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

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?