Solve each quadratic equation using the quadratic formula x^2 + 10x = -25

to solve for x you apply the quadratic formula to x^2 +10x = - 25 which should should turn out to x = - 5. I have a hard time explaining but I do like doing math, if it helps you trust my word, I have a 99 in the class

which expression represents the approximate length of bc?

step-by-step explanation:

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.