a problem states: "there are 9 more children than parents in a room. there are 25 people in the
room in all. how many children are there in the room? "
let c represent the number of children.
which expression represents the number of parents?
a. c-9
b.9-c
c. c•9
d. c+9

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

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.