Laura, James y Lily estaban charlando juntos y notaron que Laura es dos veces mayor que James. James, por otro lado, es dos años mayor que Lily. En total, sus edades suman 58 años. ¿Cuántos años tiene cada persona? (Dé solo el número)

What is the product? a-3/15a × 5/a-3

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?