the diameter of a circular lawn is 84m and the path of 7 metre wide runs round inside the lawn find the cost of paving the lawn with stones at rupees 15 per square metre​

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')