The area of what? if those are the dimensions of a triangle, you would do base times height divided by 2.
CF = CD + DF (since D is simply a point on the line, and C to that point added onto F to that point is CF), so 4y-9+2y-7=14. Adding it up, we get 6y-16=14 and adding by 16 we get 30=6y. Dividing both sides by 6, we get y=5. Plugging that into DF, we get 10-7=DF=3
Answer:
I'm pretty sure it's D, sorry if I'm wrong
Step-by-step explanation:
This is a black screen!!!!
