Does anyone know how the three squares are filled? I do not know what it means what I marked in blue

Mathematics

1 answer:

qwelly [4]2 years ago

5 0

The Blue Line Marked represents How much you wish to get paid? In the first square you decide in what currency you want to get paid for example US dollars, pesos, euros, etc. In the second square you decide how much you want it get paid. In the third you decide when you want to get paid. Square 2 and 3 go together for example if you want to get paid $20 and hour our $1000 a week

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Allushta [10]

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Now completing the square.

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'Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear

Tatiana [17]

Answer:

59.0891 g (rounded to 4 decimal places)

Explanation:

Half-life time of a radioactive substance is the time for half of the substance to decay.

Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:

$A=A_0\cdot (1/2)^n$

Where:

A is the amount that remains of the substance after n half-lives have elapses, and

A₀ is the starting amount of the substance.

In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is: