document.write( "Question 490526: It's given that 10^x=3 and 10^y=7. What is 10^x+y? \n" ); document.write( "
Algebra.Com's Answer #334157 by Alan3354(69443)\"\" \"About 
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Adding exponents is multiplying.
\n" ); document.write( "\"10%5E%28x%2By%29+=+10%5Ex%2A10%5Ey+=+21\"
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