Thursday
August 21, 2014

Homework Help: MATH

Posted by Katie on Monday, October 31, 2011 at 9:32pm.

a pile of bricks has 85 bricks in the bottom row, 79 bricks in the second row, 73 in the third row, and so on until there is only 1 brick in the top row.

how many bricks are in the 12th row?

how many rows are there in all?

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