Is this a solution? what makes this a solution is if both equations equal the same answer. 3x+y=11 and x-2y=6 solution: (4,-1) is it a solution?

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Look at attachment. has all info needed. need

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