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Bingel [31]
4 years ago
14

Can yall help me with this math qt plz will give brainlest

Mathematics
1 answer:
Flura [38]4 years ago
4 0

Answer:

D. 0.45

Step-by-step explanation:

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To answer for the first question, divide 828 days with the half-life, 138 days. There are 6 half-lives of polonium-210 in 828 days. 

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(problem is on the picture included) Solve for x
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4 0
3 years ago
<img src="https://tex.z-dn.net/?f=4.6%20%2B%205.1%20-%203.2%20%3D%20" id="TexFormula1" title="4.6 + 5.1 - 3.2 = " alt="4.6 + 5.1
Virty [35]
The answer is 6.5. 4.6+5.1=9.7-3.2=6.5
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