2 x (5-2)^3
2 x (3)^3
2 x 27
54
18 what is this for exactly..?
Answer:
What are the answer options... I have an answer but I want to check if it is correct... thanks
Step-by-step explanation:
yes it should be the answer
Answer:
5.73 hours
Step-by-step explanation:
70% decay means 30% remains
.3 = (1/2)^(t/3.3)
take the log of both sides
log.3 = t/3.3 * log1/2
Divide both sides by log 1/2
log.3 / log1/2 = t/3.3
use calculator
1.736965594166206 = t/3.3
multiply both sides by 3.3
5.73198646074848 = t
rounded
t = 5.73 hours