Answer:
<h3>220_450×9 =-221</h3>
Step-by-step explanation:
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The answer is. -2x + 10y +15x - 25 (not sure what this space means) -2(x - 12)
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Answer:
The answer is B!!HOPE THIS HELPS :)
Step-by-step explanation:
I just guessed it and its right :)
Answer:
8
Step-by-step explanation:
The other sides are the same and 30/15 is 2, so 120/15 is 8, so they are all equivalent, so 2*15=30 and its the same for b, 8*15=120
1 mole of any substance is approximately 6.022*10^23 atoms (Avogadro's number)
So
(4.90*10^31 atoms) * (1 mole / 6.022*10^23 atoms) = 8.14*10^7 moles