Homework Help: Math

Posted by Danny on Sunday, January 6, 2013 at 10:48pm.

Which is a molecule of phosphoric acid contains 3 atoms of hydrogen to every 4 atoms of oxygen. Could a compound containing 16 atoms of oxygen and 12 atoms of hydrogen be phosphoric acid? Explain.

Mr.Lee has 3/10 of his gross salary deducted for taxes. If Mr.Lee makes $900 a week, how much is deducted for taxes?

Math - Mr. Yeo, Monday, January 7, 2013 at 2:59am
1. Yes, because the numbers are proportional.

2. 3/10=.3
.3*900=270

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