What is the mean of 22, 72, 79, 72, and 70

63

Explanation:

You first have to add all the numbers together.

22+72+79+72+70 = 315

You divide the total by the amount of numbers (5)

315/5 = 63

The mean is 63

63

Explanation:

Remeber all you have to do to find the mean is add all the numbers up and divide of how many there are, so you would add 22 + 72 + 79+ 72+ 70=315 divided by 5.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue