It is the second option, let me know if you got it right
To estimate you would do 36000-33000=3000
If y+6=15, then y=9. (9+6)divided by 3 would be 5, not 15.
The perimeter of a triangle is the sum of its side lengths.
The perimeter of the triangle is: ![14d + 7f +7](https://tex.z-dn.net/?f=14d%20%2B%207f%20%2B7)
<u>The sides of the triangle are:</u>
Side 1 = (8d - 3) cm
Side 2 = (6d + 2) cm
Side 3 = (7f + 8) cm
The perimeter (P) is calculated as:
P = Side 1 + Side 2 + Side 3
So, we have:
![P = (8d - 3) + (6d + 2) + (7f + 8)](https://tex.z-dn.net/?f=P%20%3D%20%288d%20-%203%29%20%2B%20%286d%20%2B%202%29%20%2B%20%287f%20%2B%208%29)
Remove brackets
![P = 8d - 3 + 6d + 2 + 7f + 8](https://tex.z-dn.net/?f=P%20%3D%208d%20-%203%20%2B%206d%20%2B%202%20%2B%207f%20%2B%208)
Collect like terms
![P = 8d + 6d + 7f - 3 + 2 + 8](https://tex.z-dn.net/?f=P%20%3D%208d%20%20%2B%206d%20%2B%207f%20-%203%20%2B%202%20%2B%208)
![P = 14d + 7f +7](https://tex.z-dn.net/?f=P%20%3D%2014d%20%2B%207f%20%2B7)
Hence, the perimeter of the triangle is: ![14d + 7f +7](https://tex.z-dn.net/?f=14d%20%2B%207f%20%2B7)
Read more about perimeters at:
brainly.com/question/6465134