Nhat was the sensitive, well-insulated tool Willard F. Libby used to date artifacts with known ages? X-ray machine
Richter scale
Geiger-Müller tubes
Petri dish

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)

8 2/3 is the answer

step-by-step explanation: just use a calculator

ok then what happened.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.