Year 9-10 Math

Simplify the expression: 3x + 2y - 4x + 5y

• -x + 7y

• 2x + 7y

• 5x - 2y

• -2x + 3y

Calculate the area of a rectangle with length 8 cm and width 5 cm.

• 35 square cm

• 10 square cm

• 42 square cm

• 40 square cm

Convert 0.75 to a fraction in simplest form.

• 3/4

• 1/2

• 2/3

• 4/5

What is the probability of rolling a 5 on a fair six-sided die?

• 1/3

• 1/4

• 1/5

• 1/6

In a class of 30 students, 18 are girls. What is the ratio of boys to girls?

• 3:2

• 5:1

• 4:3

• 2:3

Solve the equation: 2x + 5 = 17

• x = 6

• x = 12

• x = 10

• x = 8

Find the median of the following set of numbers: 12, 15, 18, 20, 22

• 18

• 16

• 21

• 25

If a triangle has angles measuring 30°, 60°, and 90°, what type of triangle is it?

• Acute triangle

• Isosceles triangle

• Right triangle

• Equilateral triangle

Express 0.6 as a percentage.

• 50%

• 75%

• 60%

• 80%

A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. What is the probability of drawing a blue marble?

• 3/8

• 1/4

• 1/3

• 2/5