A mine worker discovers an ore sample containing 500mg of radioactive materials. It is discovered that the radioactive material has a half-life of 2 days. Find the amount of radioactive material in the sample in the beginning of the 14th day.

7.8125 or 7.8

Step-by-step explanation:

gm=(1/2)^{n-1}gm=(1/2)n−1

\begin{gathered}gm=500 (1/2)^{ 7- 1} \\gm= 500 (1/2)^{6}\end{gathered}gm=500(1/2)7−1gm=500(1/2)6

= 7.8125 or 7.8

2.

according to newton’s cannonball model, what happens if the cannonball's velocity is enough to overpower the pull of earth’s gravitystep-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it