Mathematics Quiz 3

Solve for x: 3x + 5 = 20.

• 0

• 5

• 15

• 10

What is the ratio of 8 to 12 in simplest form?

• 1 to 2

• 4 to 5

• 3 to 4

• 2 to 3

Calculate the area of a rectangle with length 10 cm and width 5 cm.

• 50 cm²

• 15 cm²

• 30 cm²

• 40 cm²

If a triangle has a base of 6 cm and a height of 4 cm, what is its area?

• 14 cm²

• 12 cm²

• 10 cm²

• 8 cm²

Solve for y: 2y - 7 = 13.

• 5

• 10

• 20

• 15

What is the proportion of 3 to 9 compared to 1 to x?

• 6

• 1

• 4

• 3

Find the perimeter of a square with a side length of 4 m.

• 8 m

• 20 m

• 16 m

• 12 m

A class has 15 boys and 10 girls. What is the ratio of boys to girls?

• 4:3

• 2:1

• 3:2

• 5:3

If the mean of the data set {2, 4, 6, 8, 10} is x, what is the value of x?

• 8

• 10

• 6

• 4

What is the area of a circle with a radius of 3 cm?

• 12.56 cm²

• 28.26 cm²

• 18.84 cm²

• 31.42 cm²