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Aneli [31]
2 years ago
8

A_________is a tool for mearsing the side of an angle​

Mathematics
1 answer:
bogdanovich [222]2 years ago
4 0

Answer:

a protractor

:D

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The radioactive isotope radium has a half-life of 1,600 years. The mass of a 100-gram sample of radium will be______ grams after
Olenka [21]
To solve this we are going to use the half life equation N(t)=N_{0} e^{( \frac{-0.693t}{t _{1/2} }) }
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t is the time in years
t_{1/2} is the half life of the substance
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From the problem we know that:
N_{0} =100
t=200
t_{1/2} =1600

Lets replace those values in our equation to find N(t):
N(200) =100e^{( \frac{(-0.693)(200)}{1600}) }
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8 0
3 years ago
Answers :
alexdok [17]
The correct answer is B
8 0
3 years ago
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