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3 years ago

Need to help my little sister with her math homework but i am really bad with decimals. PLEASE HELP!!!

1 answer:

4 0

0.93 x 2.6

First Step: (ignore the decimals and do it like regular multiplication)
93 x 26 = 2418

Second Step: (Count the total number of decimal places)
Count the decimal place:
0.93 (2 decimal places)
2.6 (1 decimal place)
Total : 3 decimal places

Third Step: (Put the decimal places back in)
Move 2418 back by 3 decimal places
That will be 2.418

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Answers:
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4 years ago

Half-life of Po-210 is 140 days. If the initial mass of the sample is 5

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Answer:

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Step-by-step explanation:

we are given half-life of PO-210 and the initial mass

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in order to solve so we can consider the half-life formula given by

$\displaystyle f(t) = a {0.5}^{t/T}$

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thus substitute:

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3 years ago

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Answer:

The last choice. The red one

Step-by-step explanation:

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Step-by-step explanation:

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