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Dafna11 [192]
2 years ago
6

Element X decays radioactively with a half life of 13 minutes. If there are 830 grams of Element X, how long, to the nearest ten

th of a minute, would it take the element to decay to 20 grams?
Mathematics
1 answer:
Nonamiya [84]2 years ago
4 0

Answer:

26.92 min

if I'm not wrong!

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Answer:

x = 21

Step-by-step explanation:

<u>Step 1:  Make an expression</u>

Since they are supplements, that means that they add up to 180 degrees.

3x + 6 + 5x + 6 = 180

<u>Step 2:  Combine like terms</u>

3x + 6 + 5x + 6 = 180

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<u>Step 3:  Subtract 12 from both sides</u>

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<u>Step 4:  Divide both sides by 8</u>

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