Answer:
2nd option
Step-by-step explanation:
using the converse of Pyhagoras' identity
If the square of the longest side is equal to the sum of the squares on the other 2 sides then the triangle is right.
longest side = 100 , then 100² = 10000
60² + 80² = 3600 + 6400 = 10000
then
60² + 80² = 100²
thus the triangle is right
-2 1/4*2 1/2
=-2.25*2.5
=-5.625
You should divide $31.25 by 5 and $50 by 8 and then see how the realationship are similar