Mathematics Mastery Challenge

Solve for x: 2x + 5 = 15.

• 5

• 10

• 7

• 0

What are the roots of the quadratic equation x^2 - 4x - 5 = 0?

• 5, -1

• 3, 2

• -5, 1

• 0, 4

Simplify the polynomial: 3x^2 + 5x - 2 + 4x^2 - 3x + 1.

• 5x^2 + 3x + 1

• 7x^2 + 2x - 1

• 4x^2 + 5x - 2

• 6x^2 + 2x + 1

prove that 5√2 + 3

If sin(θ) = 0.5, what is θ in degrees?

• 120°

• 30°, 150°

• 60°

• 90°

A tree casts a shadow of 10 meters when the angle of elevation of the sun is 30 degrees. How tall is the tree?

• 3.5 meters

• 8.2 meters

• 12.0 meters

• 5.77 meters

Calculate the area of a circle with a radius of 7 cm.

• 150.00 cm²

• 154.00 cm²

• 153.94 cm²

• 160.00 cm²

find assumed mean method

What is the mode ?

If a die is rolled, what is the probability of getting an even number?

• 1/3

• 2/3

• 1/2

• 1/4