We need the half-life of C-14 which is 5,730 years.
Now, we will need a half-life equation:
elapsed time = half-life * log (bgng amt / ending amt) / log 2
We'll say beginning amount = 100 and ending amount = 41
elapsed time = 5,730 * log (100/41) / log 2
elapsed time = 5,730 * log (
<span>
<span>
<span>
2.4390243902
</span>
</span>
</span>
) / 0.30102999566
elapsed time = 5,730 * 0.38721614327 / 0.30102999566
elapsed time =
<span>
<span>
</span></span><span><span><span>5,730 * 1.2863041851
</span>
</span>
</span>
<span>elapsed time = 7,370.523 years
Source:
http://www.1728.org/halflife.htm </span>
The number is 2
9 x 2 = 18
18 + 6 = 24
The answers are below:
{X = 6, Y = -3}
Note: The first image is how to solve for Y. The second image is how to solve for X.
87/14 or 6 3/4. That's an improper fraction and then a mixed fraction. Same answer though
If it is shaded 1/5 color only 1