Mathematics Challenge for Grade 12

What is the value of x in the equation 2x + 3 = 11?

• 7

• 2

• 5

• 4

If a triangle has angles of 45 degrees and 90 degrees, what is the third angle?

• 60 degrees

• 75 degrees

• 45 degrees

• 30 degrees

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

• 30 cm²

• 50 cm²

• 15 cm²

• 40 cm²

What is the perimeter of a square with a side length of 4 cm?

• 16 cm

• 12 cm

• 8 cm

• 20 cm

If a car travels 60 km in 1 hour, how far will it travel in 3 hours?

• 180 km

• 90 km

• 120 km

• 240 km

What is the value of 5! (5 factorial)?

• 100

• 24

• 120

• 60

Solve for y: 3y - 7 = 2y + 5.

• 5

• 12

• 15

• 10

What is the slope of the line represented by the equation y = 2x + 3?

• 2

• -2

• 3

• 1

If a circle has a radius of 7 cm, what is its circumference? (Use π ≈ 3.14)

• 43.96 cm

• 31.40 cm

• 50.24 cm

• 21.98 cm

What is the result of 15 divided by 3 plus 4?

• 12

• 7

• 9

• 5