There are 160 students in the band if there are 100 boys what is the reduced ratio of girls to boys?

I'll give brainliest if you answer right : )

What term makes it inconsistent y=2x - 4

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.