Which of the following are solutions to the quadratic equation below (check all that apply) x^2+8x+16=2

does anyone knows this?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?