There are cats playing in the yard. You can see 9 more legs than tail. How many cats is there?

3

Step-by-step explanation:

You could make this problem into an equation. For example, you would give the number of cats x. A cat only has one tail. Therefore, the number of tails would also be x. And there are 9 more legs than tails. Also, a cat has 4 legs. So, 9 + x = 4x. Simplify the equation, and it gives you: x = 3.

1/2*qr*rs

step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a