Recall that a dilation with center (0, 0) and scale factor 
maps 
onto 
.
Now, triangle ADE is formed by
Whereas triangle ABC is formed by
In other words, the coordinates of B and C can be obtained by multiplying by 2 the coordinates of D and E.
This means that you get ABC from ADE by dilating with center (0,0) and scale factor 2.
A
2 x 8+16 = 32 16 x 4 = 64
B
2 x 4 +8 = 16 8 x 8 = 64
C
4 x 8 + 32 = 64 2 x 32 = 64
1 l l l l 8 5 l l l l 40
2 l l l l 16 6 l l l l 48
3 l l l l 24 7 l l l l 56
4 l l l l 32 8 l l l l 64
The teacher has 64 or more pencils to give out.
<em>Hope this helps you choice your answer. :) </em>
I think it might be the 3rd one.
Someone correct me if I'm wrong please.
The answer is about 12.5 (when rounded to the nearest 10th).
This can be found using the distance formula between each point. One distance is 5, one is
and one is
. Added together gives you the answer above.
