Three hikers equally share 1/2 gallon of water. explain how you would use an area model to find the amount of water each hiker drank

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Solve for the equation. 4x - 13 = 2x + 9