3. If Joe scored a 400 on a test with a mean of 500 and a standard deviation of 25, what would his z-score be?

(hurry! ) which expression is equivalent to the following complex fraction?

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.

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set