Yr 11 General Maths Mid-Unit 2 Review (Chap 6-8)

What is the area of the triangle shown, correct to one decimal places?

• 31.7cm²

• 33.1cm²

• 35cm²

• 70cm²

Given that the area of the triangle is 158.64 m² , find θ.

• 35.4^o

• 45.7^o

• 46.6^o

• 52.4^o

Calculate B - D

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• 

Which matrix corresponds to the road network shown?

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A boat sets a heading 24^o from West as shown on the diagram. After 20 minutes, the boat has travelled 4km. How far North is the boat compared to where it started.

• 3.65km

• 1.63km

• 8.98km

• 4.37km

A bushwalker went 7km West, then 4.5km South. The bearing of the bushwalker from her start position is:

• 303 degrees

• 057 degrees

• 237 degrees

• 213 degrees

What is the length of AB?

• 82.16

• 55.38

• 62.92

• 70.73

The area of a trapezium is  $A\ =\ \frac{\left(a\ +\ b\right)h}{2}$ . An expression for b is:

•  $b\ =\ \frac{2A}{h}\ -\ a$  

•  $b\ =\ \frac{2A}{a\ }\ -h$  

•  $b\ =\ \frac{2h}{A}-a$  

•  $b\ =\ \frac{2a}{h}\ -\ A$  

Terry throws a ball into the air. The ball's height in centimetres above the ground (h) is given by h = 9t - 0.5t^2, where t is the number of seconds after throwing. How high is the ball after 3 seconds?

• 32.5cm

• 16cm

• 28cm

• 22.5cm

A 3 x 4 matrix is multiplied by a 4 x 2 matrix. The size (order) of the resulting matrix will be:

• 3 x 2

• 2 x 3

• 4 x 4

• 4 x 3