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In-s [12.5K]
3 years ago
8

Can someone help me please because I have a lot of trouble doing these problems. Please show work so I can see how you did it.

Mathematics
2 answers:
m_a_m_a [10]3 years ago
4 0
Your answer would be 14

14 + (-9) - (-9)
so (-9) - (-9) would be zero since we are subtracting a negative
14+0 = 14

I hope this helps :)
Juliette [100K]3 years ago
3 0
14+(-9)-(-9)=14-9+9=14
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Step-by-step explanation:

The half life of radium-228 is 5.75 years. We need to find the decay rate for radium.

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ln\frac{N_o}{N_t}=-\lambda t

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Putting values in formula and solving:

ln\frac{N_o}{N_t}=-\lambda t

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So, Decay rate for Radium-228 is 0.01205.

Keywords: Decay Rate

Learn more about Decay Rate at:

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