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zhuklara [117]
3 years ago
9

I have no idea how to work out these problems please help

Mathematics
1 answer:
Irina18 [472]3 years ago
3 0

Answer:

I would say the one that says if 300 lunches were served then 40 more students chose pizza over salad. It is either that or the one on top i can't see the graph clearly enough.

Step-by-step explanation:

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Can somebody please balance this !?!
Lera25 [3.4K]
\mathrm{CO}_2 has 2 oxygens for every carbon. \mathrm{CO} will contribute one of each for every molecule. You then have to have an even multiple of \mathrm{CO} molecules to not end up with an odd number of oxygens.

So if you take 2\mathrm{CO}, you should end up with 2 carbons on the RHS. 2\mathrm{CO}_2 then has 4 oxygens. 2 of them are already accounted for, so you just need one \mathrm O_2 to balance out the reaction.

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3 years ago
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Licemer1 [7]

Answer: The best answers are :

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Step-by-step explanation:

I hope it helps :)

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Lilit [14]

Answer:

x> y-300/12

Step-by-step explanation

1. Subtract 300 from both sides

2.  Divide both sides by -12

3. Switch the sides

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Put a 2 in front of Na and a 2 in front of NaCl
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