Find the mean of 2x4+2y4+2z4=144 and what is the value of x4 ,y4,z4​

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Solve the system of equations. x=-2y+1 and x+2y=9. show work

If i want to read a 124-page book in 3 weeks how many pages would i have to read each day?