How fast is a teacher walking if they go 40 meters in 20 seconds

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

Finding tbe values of the variables in each kite

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?