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

y=1/4x-4

step-by-step explanation:

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.