Answer:
It will take 50 years to decay from 512 grams to 121.5 grams.
Step-by-step explanation:
The decay formula :
where
N= amount of substance after t time
N₀= initial of substance
t= time.
A substance decays at a rate 25% every 10 years.
So, remaining amount of the substance is = (100%-25%)= 75%
, t= 10
Taking ln both sides
Now , N₀= 512 grams, N= 121.5 grams, t=?
Taking ln both sides
⇒t=50 years
It will take 50 years to decay from 512 grams to 121.5 grams.
Answer:
30
Step-by-step explanation:
since 12 - 7 is in the- um- whatever these- ( )- things are called (I forgot), you do it first. 12 - 7 is 5.
Next you do 6 x 5 which gives you your final answer of 30.
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True. The answer is the product of 4 and a number plus another number.
Answer:
It refers to a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
