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m_a_m_a [10]
2 years ago
14

Evaluate 5m+4 when m=8.

Mathematics
2 answers:
likoan [24]2 years ago
7 0

Answer:

44 is the answer for the question

erastova [34]2 years ago
6 0

Answer:

44

Step-by-step explanation:

5x8= 40

40+4=44

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Answer:

a) \frac{dm}{dt} = -k\cdot m, b) m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }, c) m(t) = 10\cdot e^{-\frac{t}{2438.155} }, d) m(300) \approx 8.842\,g

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

\frac{dm}{dt} = -k\cdot m

b) The general solution is found after separating variables and integrating each sides:

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The particular solution of the differential equation is:

m(t) = 10\cdot e^{-\frac{t}{2438.155} }

d) The amount of radium after 300 years is:

m(300) \approx 8.842\,g

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Step-by-step explanation:

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