General Mathematics 2021 - Multiple choice

The second smoothed value for the 3-point moving average is

• 32

• 25

• 20

• 18

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Unit 3 - Topic 2

How many faces does this planar graph have?

• 3

• 4

• 5

• 7

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Unit 4 - Topic 2

The table shows the results of a student survey about their preferred movie genre.

Of the students who preferred comedy, what percentage were in Year 9 or higher?

• 25%

• 30%

• 60%

• 75%

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Unit 3 - Topic 1

A confounding variable is a variable that

• can only take on a certain number of values.

• remains constant throughout a statistical investigation.

• is used to predict a difference in the response variable.

• other than the explanatory variable, influences the response variable.

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Unit 3 - Topic 1

The coach of a four-person relay team is deciding on the order of the runners.

Use the bipartite graph to determine which statement is correct.

• Linh should be the first runner.

• Simon should be the second runner.

• Ivan should be the third runner.

• Balal should be the fourth runner.

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Unit 4 - Topic 3

These scatterplots show the number of high-rises in a city and their distance from the city centre.

Which scatterplot was used to extrapolate that 25 km from the city centre there were 20 high-rises?

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Unit 3 - Topic 1

Which cut (C₁, C₂, C₃ or C₄) could be used to determine the maximum flow from the source to the sink in this

network?

• C₁

• C₂

• C₃

• C₄

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Unit 4 - Topic 3

A basketball competition has six teams that have completed three rounds of competition as shown.

The graph to represent this information has

• 6 Edges

• 9 Edges

• 15 Edges

• 18 Edges

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Unit 4 - Topic 2

A staircase is to be extended by installing n additional stairs. Each stair is 25 cm high.

If the existing staircase reaches 1.2 m off the ground, which rule models the total height the stairs will reach in centimetres?

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Unit 3 - Topic 3

City A is located at 55° N, 120° E and City B is located at 40° N, 165° E.

The sun will rise in City A approximately:

• 1 hour before it rises in City B.

• 1 hour after it rises in City B.

• 3 hours before it rises in

  City B.

• 3 hours after it rises in City B.

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Unit 3 - Topic 4