2.9% OF the 500 phones are more than likely defective. In order to figure this out you must do 500*0.029 which would equal 14.5 and rounds off to 15. 15 out of the 500 phones will maybe be defective.
In plain and short, we simply divide the "whole" by the sum of the ratios, and distribute accordingly.
now, 100% is the whole of any amount, so we'll divide 100% by (3+1).
Answer: 5 faces,8 edges,5 vertices
Step-by-step explanation:5 faces - of which 1 is a square face at the base and 4 isosceles triangle, above.
5 vertices - of which 4 are at the base where 3 edges meet and one above where 4 edges meet.
8 edges - of which 4 are equal in length and at the base and the other 4 are equal in length and above.
Jessica would have eaten 3/9 of the 8/9 and would have 5/9 left