Nadia has 20 more postcards then pete. after nadia gives pete some cards pete has 2 more postcards than nadia. how many postcards does nadia give to pete?

11 postcards.

Step-by-step explanation:  

Let x be the number of postcards that Pete have. Let y be number of postcards that Nadia gave to Pete.

We are told that Nadia has 20 more postcards then Pete. So Nadia will have x+20 postcards.        

We are also told that after Nadia gives Pete some cards Pete has 2 more postcards than Nadia. We can represent this information as:

Let us solve for x.

Add y to both sides of equation.

Subtract x from both sides of equation.

Therefore, Nadia gave 11 postcards to Pete.

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms

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: