There would be 450 rabbits last year.
Since 900 is double 450, 200% of 450 is 900. (450 would be 100%, so you would double it).
Then number is 3 because 3 times 5 is 15 and 15 plus 2 is 17. Hope this helps.
Given:
Point F,G,H are midpoints of the sides of the triangle CDE.

To find:
The perimeter of the triangle CDE.
Solution:
According to the triangle mid-segment theorem, the length of the mid-segment of a triangle is always half of the base of the triangle.
FG is mid-segment and DE is base. So, by using triangle mid-segment theorem, we get




GH is mid-segment and CE is base. So, by using triangle mid-segment theorem, we get




Now, the perimeter of the triangle CDE is:



Therefore, the perimeter of the triangle CDE is 56 units.
Answer:
I got -60
I'm pretty good at this.. oop guess I missed a step