Using that quadratic formula to solve x^2+20=2x, what is the value of x

What is the area of the triangle 10 13 12

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).