When finding the mean, or average, of a set of numbers you divide the sum of the group of numbers by the number of items in the group.
What is the average height for the 3 trials listed below?
6 cm
4 cm
2 cm
12 cm
6 cm
2 cm
4 cm

Which of the following statements is true about planck’s law

Drive down any three characteristic of modern periodic table

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat