Answer:
15x-9+y
Is required perimeter.
Some number divided by 4
Step-by-step explanation:
The y stands for an unknown number, aka some number. The slash indicates division, so it would be some number divided by 4.
M=multiply to the 2 then what it is 5x3 so. 15x2=30m
(x-8)^2+y^2=225 I'm not able to factor it