Hannas school her to the book donation there are 150 students at her school and they Donated a total of b books Hannah do need it three times as many as the average number of books each student donated how many books did Hannah donate

She donated b/50 books

Step-by-step explanation:

In this question, we are we are told 150 students donated a total of b books. The average number of books donated by each student will be:

The total number of books/ the total number of students.

The average number of books is this b/150.

Now, we are also told that Hannah donated 3 times the average number of books.

This is simply calculated by multiplying the average number of books donated by 3

This is equal to 3 * b/150 = b/50 books

Hence, Hannah donated b/650 books

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: