Vince works on a construction site. The amount Vince gets paid depends on the type of shift he works, as shown in the table below. \begin{array}{|l|c|c|c|} This information is shown in matrix \(R\) below. \begin{align*} \(R^T=\) --- 2 WORK AREA LINES (style=blank) --- During one week, Vince works 28 hours at the normal rate of pay, 6 hours at the overtime rate of pay, and 8 hours at the weekend rate of pay. --- 0 WORK AREA LINES (style=lined) --- Vince will receive $90 per hour if he works a public holiday shift. Matrix \(Q\), as calculated below, can be used to show Vince's hourly rate for each type of shift. \begin{align*} --- 0 WORK AREA LINES (style=lined) ---
\hline
\rule{0pt}{2.5ex} \textbf{Shift type} \rule[-1ex]{0pt}{0pt}& \textbf{Normal} & \textbf{Overtime} & \textbf {Weekend} \\
\hline
\rule{0pt}{2.5ex} \textbf{Hourly rate of pay} \rule[-1ex]{0pt}{0pt} \ \text{(\$ per hour)} & 36 & 54 & 72 \\
\hline
\end{array}
R=\left[\begin{array}{lll}
36 & 54 & 72
\end{array}\right]
\end{align*}
\begin{aligned}
Q & =n \times\left[\begin{array}{llll}
1 & 1.5 & 2 & p
\end{array}\right] \\
& =\left[\begin{array}{llll}
36 & 54 & 72 & 90
\end{array}\right]
\end{aligned}
\end{align*}
MATRICES, FUR1 2019 VCAA 2 MC
There are two rides called The Big Dipper and The Terror Train at a carnival.
The cost, in dollars, for a child to ride on each ride is shown in the table below.
Ride | Cost ($) | |
The Big Dipper | 7 | |
The Terror Train | 8 |
Six children ride once only on The Big Dipper and once only on The Terror Train.
The total cost of the rides, in dollars, for these six children can be determined by which one of the following calculations?
A. | `[6] xx [(7, 8)]` | B. | `[6] xx [(7), (8)]` |
C. | `[(6, 6)] xx [(7, 8)]` | D. | `[(6, 6)] xx [(7), (8)]` |
E. | `[(6), (6)] xx [(7, 8)]` |
MATRICES, FUR2 2018 VCAA 2
The Westhorn Council must prepare roads for expected population changes in each of three locations: main town `(M)`, villages `(V)` and rural areas `(R)`.
The population of each of these locations in 2018 is shown in matrix `P_2018` below.
`P_2018 = [(2100),(1800),(1700)]{:(M),(V),(R):}`
The expected annual change in population in each location is shown in the table below.
- Write down matrix `P_2019`, which shows the expected population in each location in 2019 (1 mark)
- The expected population in each of the three locations in 2019 can be determined from the matrix product.
`qquad qquad P_2019 = F xx P_2018,` where `F` is a diagonal matrix.
Write down matrix `F`. (1 mark)
MATRICES, FUR1 2016 VCAA 4 MC
The table below shows the number of each type of coin saved in a moneybox.
The matrix product that displays the total number of coins and the total value of these coins is
A. | `[(5,10,20,50)][(15),(32),(48),(24)]` | B. | `[(15,32,48,24)][(1,5),(1,10),(1,20),(1,50)]` |
C. | `[(5,10,20,50)][(1,15),(1,32),(1,48),(1,24)]` | D. | `[(15,32,48,24)][(5),(10),(20),(50)]` |
E. | `[(5,10,20,50),(15,32,48,24)][(1),(1),(1),(1)]` |
MATRICES, FUR2 2009 VCAA 2
Tickets for the function are sold at the school office, the function hall and online.
Different prices are charged for students, teachers and parents.
Table 1 shows the number of tickets sold at each place and the total value of sales.
For this function
-
- student tickets cost `$x`
- teacher tickets cost `$y`
- parent tickets cost `$z`.
MATRICES, FUR1 2008 VCAA 2 MC
Apples cost $3.50 per kg, bananas cost $4.20 per kg and carrots cost $1.89 per kg.
Ashley buys 3 kg of apples, 2 kg of bananas and 1 kg of carrots.
A matrix product to calculate the total cost of these items is
A. `[(3), (2), (1)] [(3.50), (4.20), (1.89)]`
B. `[(3, 2, 1)] [(3.50, 4.20, 1.89)]`
C. `[(3.50 xx 2, 4.20 xx 3, 1.89 xx 1)]`
D. `[(3), (2), (1)] [(3.50, 4.20, 1.89)]`
E. `[(3.50, 4.20, 1.89)] [(3), (2), (1)]`
MATRICES, FUR1 2012 VCAA 7 MC
A store has three outlets, A, B and C. These outlets sell dresses, jackets and skirts made by the fashion house Ocki.
The table below lists the number of Ocki dresses, jackets and skirts that are currently held at each outlet.
A matrix that shows the total number of Ocki dresses (D), jackets (J) and skirts (S) in each size held at the three outlets is given by
MATRICES, FUR1 2012 VCAA 6 MC
The table below shows the number of classes and the number of students in each class at each year level in a secondary school.
Let `F= [1 quad 1 quad 1 quad 1], \ G= [(1),(1),(1),(1)],\ M= [7 quad 5 quad 6 quad 4],\ N= [(7),(5),(6),(4)],\ P= [(22,0,0,0), (0,20,0,0), (0,0,18,0), (0,0,0,24)]`
A matrix product that displays the total number of students in Years 9 – 12 at this school is
A. `M xx P xx F`
B. `P xx G xx M`
C. `F xx P xx N`
D. `P xx N xx F`
E. `F xx N xx P`