![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b10d39aa59675b29da3cf64201a423ac.png\")
The cost of two types of sweaters is
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The number of each type sold period of different months.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=197701d7d5082946c8f58153014a13e3.png\")
a)
\Multiply the matrices, Find matrix A.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d48e7e6da80e52974ab68ffd022aef95.png\")
The matrix multiplication did not possible to three matrices.
\b)
\Did not possible to answered this question.
\