Here are two number machines, A and B. Input
Output
A
Х
x 5
-4
B.
x 3
+ 8
Both machines have the same input, X.
Work out the input that makes the output of A three times the output of B.

Name the most appropriate metric unit for each measurement

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?

What are the values of each variable in the diagram below?