6. quadrilateral abcd ~ quadrilateral pqrs. if ab = 10, bc = 6, ps = 12,
and qr = 4, find the scale factor of abcd to pqrs.

The answer is 10. and if you go by pemdas you would 1. multiplication 2. division 3. addition 4. subtraction

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.