What is the y coordinate of the midpoint of the line segment yz?

How many $20 bills do you need to have to make $280

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?