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Montano1993 [528]
3 years ago
10

What number should be added to -20 to get the sum of 36?

Mathematics
2 answers:
DochEvi [55]3 years ago
4 0

36 - (-20) = 56

SO the number that should be added to -20 to get the answer of 36 is 56.

Hope this helps! Mark as Brainliest please! :)))

nadezda [96]3 years ago
4 0
Well, we need to turn -20 into zero to make it easier. -20’s opposite is 20. So, -20+20=0. Now, what do we add to 0 to get 36? 36, right? So, 0+36 is 36. Now add the numbers we previously added. 20+36=56. So, the number that should be add to -20 to get 36 is 56. Hope this helped!
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Now we have to calculate the amount after 10000 years.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

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Thus, the amount after 10000 years will be, 0.105 grams.

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Answer:

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