2 people can plough a field in 6 hours.
a) How long would it take 1 person to plough the field?

The circumference of a circle is 5 pi cm. what is the area of the circle?

Asquare parking lot has 6,400 square meters what is the length in meters

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