Pls help me on number 10 plsss I’ll give brainlest

Which matrix multiplication is possible?

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

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