Any help would be greatly appreciated!

Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. one day's discharge at its mouth, 5.6 trillion gallons, could supply all of country a's households for seven months. based on this statement, determine how much water an average household uses each month. assume that there are 100 million households in country a. country a uses approximately nothing gallons per household per month.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse