Search

1 of 8 0-day streak

Add and subtract matrices

Question 1 of 8

No calculator

Matrix \(D\) records the points scored by each team in round 1 of a school athletics carnival, and matrix \(C\) records the points scored by the same teams in round 2

In both matrices, the rows are Barton, Chisholm (top to bottom) and the columns are Relay, Sprint (left to right)

\[D = \begin{bmatrix} 3 & 11 \\ 2 & 12 \end{bmatrix}\]
\[C = \begin{bmatrix} 12 & 12 \\ 8 & 1 \end{bmatrix}\]
(a)4 marks

Calculate \(D + C\) to find the total points scored by each team in each event over the two rounds

D + C
(b)1 mark

In total, how many points did Chisholm score in the relay over the two rounds?