Mathematics Challenge

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

• 5x - 6y

• 8y - 2x

• -2x + 2y

• -2x + 6y

Calculate the value of sin(30 degrees)

• 0.5

• 1.0

• 0.25

• 0.75

Solve for x: 2x + 5 = 17

• x = 8

• x = 6

• x = 12

• x = 10

Find the area of a rectangle with length 6 cm and width 4 cm

• 18 square cm

• 30 square cm

• 24 square cm

• 10 square cm

What is the sum of the interior angles of a triangle?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees

If a circle has a radius of 5 cm, what is its circumference?

• 15π cm

• 25 cm

• 10π cm

• 3π cm

Evaluate: cos(45 degrees)

• 1.4142

• 0.5

• 0.866

• 0.7071

Solve the equation: 3(x + 4) = 21

• x = 7

• x = 10

• x = 3

• x = 5

What is the Pythagorean theorem?

• The Pythagorean theorem states that the longest side of a triangle is equal to the sum of the other two sides

• In a right-angled triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

• The Pythagorean theorem only applies to equilateral triangles

• The sum of the lengths of the sides of a triangle is equal to the length of the hypotenuse

Find the volume of a cube with side length 3 cm

• 9 cubic cm

• 6 cubic cm

• 12 cubic cm

• 27 cubic cm