A bag contains seven red balls, five green balls, four yellow balls and two black balls. A ball is picked at random from the bag. What is the probability that the ball will NOT be black?
A.889
B.1.125
C..111
D..667

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2