When Jack runs the 400 meter dash, his finishing times are normally distributed with a mean of 65 seconds and a standard deviation of 1 second. If Jack were to run 20 practice trials of the 400 meter dash, how many of those trials would be faster than 66 seconds, to the nearest whole number?

Trigonometry hellllllpppppppp asap

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers

3.4a=57.8 what is the the value of a