Fill in the blanks with the correct word 1)An event that has probability O is said to be.

2)An event that has probability 1 is said to be.​

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.