The ages of three siblings are all consecutive integers (meaning each is only a year older than the previous sibling). The sum of their ages is 39. How is old is the youngest sibling? Hint: youngest = x, middle = x+1, oldest = x+2

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

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex