How many hours from 830am to 715pm?

What culture came up with the concept of zero? How do you lose 15 pounds in 1 month if you work out 40 minutes a day 5 times a week and its not helping? What does the spelling of Bible stand for? What Front end digits of 9.653? What is the meaning of word accura? What is the percentage equivalent to 0.47? What is one-half of 1 percent of 1.1 million dollars? What is 14124 divided by 44? How do write 3 19 2010 in roman numerals? What is the length of the hypotenuse of a right triangle with sides 233 and 657? What is 10 percent of 24 thousand dollars? How many feet in 1.33 acres of land? Are there any patterns in the digits of pi? If a rectangle has a perimeter of 80 cm and a length of 31 cm what is the width? What is a catevari? How many cm in five feet? What is the first 1000 odd numbers? What is the general rule of fraction? What are odds of rolling double 6 with rolling 2 dice and rolling a 1 with another die? How do you find math products?