McGraw Hill Glencoe Algebra 2, 2012
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McGraw Hill Glencoe Algebra 2, 2012 View details
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Exercise 11 Page 527

You can solve the proportion by using cross products.

p=27

Practice makes perfect

To solve the proportion, we will start by using cross products.

9/12=p/36
9(36)=12p
324=12p
324/12=p
27=p
p=27