Answer:
Again! Option D is the answer!
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I'm pretty sure it's graph A. I apologize if it's wrong hope this helped.
Answer:
Rational numbers are numbers that can be written as fractions, unlike π, which never ends and cannot be expressed as a fraction.
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Answer:
4, 5
Step-by-step explanation:
the mode is 4 since mode is the number/s that appear most. Median is the number in the middle when the range is in order. That is 5
The amount of substance left of a radioactive element of half life,

after a time, t, is given by:

Given that <span>potassium-40 has a half life of approximately 1.25 billion
years.
The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

Therefore, </span><span>the maximum age of a fossil that we could date using 40k is
12.5 billion years.</span>