Raj and aditi like to play chess against each other. aditi has won 12 of the 20 games so far. they decide to play more games. how many more games will aditi have to win to have a 70% winning record? 12 + x = 0.70(20 + x) x = ≈ 6.67 she will have to win 7 more games to have a 70% winning record. how many more games will aditi have to win to have an 80% winning record? the linear equation that models this is . aditi would have to win more games to have an 80% winning record.

20

Step-by-step explanation:

We are given that she have to win games  to have a 70% winning record :

So, She will have to win 7 more games to have a 70% winning record.  

Now we are supposed to find how many more games will she have to win to have an 80% winning record

So, equation becomes:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

-2 is the right