Note: a radioactive decay constant is always negative.
time = [natural log(ending amount / beginning amount)] / k
time = ln (20 / 24) / -.00011
time = ln (5/6) / -.00011
time = -.018232155683 / -.00011
time =
<span>
<span>
<span>
165.7468698455
</span>
</span>
</span>
time =
<span>
<span>
<span>
165.75 years
</span></span></span>
Answer:
pieces
Step-by-step explanation:
Suppose you have a 7 feet long wood.
You need to find how many
-foot pieces can be cut from this wood.
To find this number of pieces, you have to divide the whole length of the wood by the length of one piece:

Answer:
Angle #4
Step-by-step explanation:
4 & 5 are equal, and opposite.
1 & 2 are also congruent by this standard.
Answer:
C
Step-by-step explanation:
'x=' create vertical lines which are not functions whereas
'y=' create horizontal lines which are functions