Help please ._.
I'll give brainliest .-.

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.