3 years ago

A little help please?

Mathematics

1 answer:

Tasya [4]3 years ago

7 0

3x-10+2x=115
5x-10=115
5x=125
x=25

m<b=3(25)-10=65
m<C=2×25=50

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This problem can be solved using the <u>Radioactive Half Life Formula: </u>

<u />

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=2.7g$ is the final amount of the material

$A_{o}=10g$ is the initial amount of the material

$t$ is the time elapsed (the quantity we are asked to find)

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Knowing this, let's find $t$ from (1):

$2.7g=(10g).2^{\frac{-t}{432y}}$

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$t=816y$

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