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Algebra

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Pre-AP Algebra 2 * Goal(s): Add matrices Subtract matrices Multiply matrices (by a scalar) Find determinants of matrices Matrix Basics A matrix is a rectangular arrangement of numbers into rows and columns The order of a matrix is the number of rows and columns in the matrix Matrices are equal if all entries in corresponding locations are equal Example: This is a 2 x 3 (?2 by 3?) matrix because it has 2 rows, 3 columns Matrix Basics The address of an entry is its location in a matrix, expressed by using the lower case matrix letter with row and column number as subscripts. Example: 5 is located in the second row and third column of matrix A, this means a2,3=5 Add & Subtract Matrices In order to add or subtract matrices, they must be the same dimensions

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0 to 200 in 6 seconds Bob was in trouble. He forgot his wedding anniversary. His wife was really pissed. She told him "Tomorrow morning, I expect to find a gift in the driveway that goes from 0 to 200 in 6 seconds AND IT BETTER BE THERE !!" The next morning he got up early and left for work. When his wife woke up, she looked out the window and sure enough there was a box gift-wrapped in the middle of the driveway. Confused, the wife put on her robe and ran out to the driveway, brought the box back in the house. She opened it and found a brand new bathroom scale. Bob has been missing since Friday

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0 to 200 in 6 seconds Bob was in trouble. He forgot his wedding anniversary. His wife was really pissed. She told him "Tomorrow morning, I expect to find a gift in the driveway that goes from 0 to 200 in 6 seconds AND IT BETTER BE THERE !!" The next morning he got up early and left for work. When his wife woke up, she looked out the window and sure enough there was a box gift-wrapped in the middle of the driveway. Confused, the wife put on her robe and ran out to the driveway, brought the box back in the house. She opened it and found a brand new bathroom scale. Bob has been missing since Friday

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