27 yd2 (b•h) it’s just like a rectangle
I think i know the answer to that question. just wait for a sec.
Answer:
Humans have technology
Step-by-step explanation:
Answer:

Step-by-step explanation:
The half life is the amount of time it takes a substance to decay to half of its original amount.
Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.
So, the fraction that will be left after 1000 years is 
Answer:
60 km/h
Step-by-step explanation:
60/40=1.5
90/1.5=60