Year 9 Mathematics Quiz Competition Candidate 1

Solve for x: 2x + 5 = 15

• 5

• 7

• 0

• 10

What is the area of a rectangle with length 8 cm and width 3 cm?

• 15 cm²

• 24 cm²

• 20 cm²

• 30 cm²

Using the Pythagorean theorem, find the length of the hypotenuse of a right triangle with legs of 6 cm and 8 cm.

• 12 cm

• 8 cm

• 14 cm

• 10 cm

Calculate the mean of the following data set: 4, 8, 6, 5, 2.

• 6.0

• 4.5

• 7.2

• 5.0

Solve for y in the simultaneous equations: 3x + 2y = 12 and 3x - y = 0.

• y=4

• y=12/9

• y=3

• y=6

What is the area of a triangle with a base of 10 cm and a height of 5 cm?

• 30 cm²

• 15 cm²

• 20 cm²

• 25 cm²

If a right triangle has one leg measuring 9 cm and the other leg measuring 12 cm, what is the length of the hypotenuse?

• 10 cm

• 13 cm

• 17 cm

• 15 cm

Find the median of the following numbers: 7, 3, 9, 5, 1.

• 3

• 7

• 9

• 5

Solve for y: 4y - 7 = 13

• 5

• 10

• 3

• 7

What is the circumference of a circle with a radius of 3.5 cm? (Use π ≈ 22/7)

• 22.0cm

• 44cm

• 154.0cm

• 88cn