an earthquake with a rating of 3.4 can cause destruction in areas of up to 100 kilometers that are populated. what is the value of x when the Richter scale rating is 3.4?

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Can someone pls ! pls answer all. no explanation needed..

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?