U have to jsut multiply sttiaght across
3/1 so 3
9 \3 = 3
4/4= 1
the denominator is 1 because they are both the same whole number.
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Answer:
Time taken = 9987.38 years
Step-by-step explanation:
We have plutonium-240 decays according to the parent function
![Q(t)=Q_oe^{-kt}](https://tex.z-dn.net/?f=Q%28t%29%3DQ_oe%5E%7B-kt%7D)
k is the decay constant,0.00011
k = 0.00011
We need to find how long will it take 27 grams of plutonium-240 to decay to 9 grams.
Q(t) = 9 g
Q₀ = 27 g
Substituting
![Q=Q_oe^{-kt}\\\\9=27e^{-0.00011\times t}\\\\-1.0986=-0.00011\times t\\\\t=9987.38years](https://tex.z-dn.net/?f=Q%3DQ_oe%5E%7B-kt%7D%5C%5C%5C%5C9%3D27e%5E%7B-0.00011%5Ctimes%20t%7D%5C%5C%5C%5C-1.0986%3D-0.00011%5Ctimes%20t%5C%5C%5C%5Ct%3D9987.38years)
Time taken = 9987.38 years
Answer:
B
Step-by-step explanation:
Factor out 1/4.
1/4 - 3/4 x = (1/4)(1 - 3x)
Answer: B