Please please please help me with this geometry question! (See image up top for question and answer choices)

Thank you

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол

Bring the fraction a/a-4 to a denominator of 16-a^2

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?