Moses added two thirds of a number and one fifths of the same number to get a result of 39. What is the number?

45

Step-by-step explanation:

Let the number be X.

So 2/3 of a number would be (2/3)x and 1/5 of the same number would be (1/5)x.  Therefore, (2/3)x+(1/5)x=39.  Next, you combine like terms by converting the fractions: (10/15)x+(3/15)x=39.  Now, you add the fractions.  (13/15)x=39.  Lastly you divide both sides by 13/15 or multiply both sides by 15/13.  x=45.  That number would be 45.  

If you would like to check, you would do 2/3(45) or 90/3 which is 30 and do 1/5(45) or 45/5 which is 9.  30+9=39

idk

step-by-step explanation:

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: