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1 of 8 0-day streak

Read information from a labelled data matrix

Question 1 of 8

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The matrix below is \(C\), which records the number of tools ordered for a hardware chain's stores: one row for each tool and one column for each store

Rows, in order: Hammers, Drills, Saws, Spanners

Columns, in order: Geelong, Ballarat

\[C = \begin{bmatrix} 6 & 11 \\ 6 & 6 \\ 10 & 4 \\ 3 & 2 \end{bmatrix}\]
(a)1 mark

Use the matrix to find the number of Hammers ordered for the Ballarat store

(b)1 mark

Calculate the total number of Drills ordered across all the stores shown