What is the probability of rolling a 5 twice with two rolls of a number cube? I got 1/36 for my answer, but I'm not so sure.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)