Brainliest if the answer is right. There are only blue balls, red balls and yellow balls in a bag.
The ratio of blue balls to red balls is 2:1.
The ratio of blue balls to yellow balls is 1:3.
Calculate the probability that a ball selected at random is blue.

3

Step-by-step explanation:

so the number is

so you are adding the number 1 and 2 3

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: