The japanese bullet train takes only three hours to travel from tokyo to osaka a distance of 321 miles what is the average speed of the train during this trip

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

How is working backward similar to solving an equation?

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?