One number is 7 more than another. the difference between their squares is 217.what are the numbers?

19 and 12

Step-by-step explanation:

Let a and b be these numbers.

1. If one number is 7 more than another, then

2. If the difference between numbers squares is 217, then

3. Solve the system of two equations:

Add these two equations:

Then

"if it is my birthday, then it is snowing"

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80