Answer:

Step-by-step explanation:
Hope this work helps
Answer:
The scale factor is 3.
Step-by-step explanation:
Take the new pupil size divided by the original pupil size
6.3/2.1 = 3
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What you need to do is combine like terms.
Answer:
False
Step-by-step
The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
Hoped I helped. Comment if I am right or not just let me know in the comments.