Solve 2x2 + 20x + 8 = 0 by completing the square. Question 12 options:

x = 5 + 17−−√, x = 5 –17−−√

x = 5 + 21−−√, x = 5 –21−−√

x = –5 + 17−−√, x = –5 –17−−√

x = –5 + 21−−√, x = –5 –21−−√

Triangle xyz has vertices x(1,3), y(0,0)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?