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.

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

answer: an 8-foot rope is tied from the top of a pole to a

stake in the ground, as shown in the diagram

below

step-by-step explanation: