Forty-two percent of the african-american pilots who served in wwii came to the awards ceremony. one thousand african-american pilots served in wwii. how many of them came to the awards ceremony?

How do you use the elimination method for this question? explain, because i really want to understand!

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?