ElonTutor Mathematics Challenge

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

• -2x + 2y

• -2x + 6y

• -5x + 6y

• 3x + 4y

Solve the equation: 2x + 5 = 15

• x = 10

• x = 7

• x = 3

• x = 5

Find the roots of the quadratic equation: x^2 - 4x + 4 = 0

• x = 2

• x = -2

• x = 3

• x = 5

Calculate the area of a triangle with base 6 cm and height 8 cm

• 48 square cm

• 14 square cm

• 24 square cm

• 30 square cm

If the probability of an event A is 0.4, what is the probability of not A?

• 0.6

• 0.5

• 0.2

• 0.8

Factorize the expression: x^2 + 5x + 6

• (x + 1)(x + 6)

• (x + 5)(x + 1)

• (x + 4)(x + 2)

• (x + 2)(x + 3)

Solve the system of equations: 2x + 3y = 8 and x - y = 1

• {'x': 2, 'y': 1}

• {'x': 4, 'y': 3}

• {'x': 1, 'y': 0}

• {'x': 3, 'y': 2}

Determine the value of x in the equation: 3(x + 4) = 21

• x = 3

• x = 7

• x = 5

• x = 10

What is the sum of interior angles of a quadrilateral?

• 360 degrees

• 450 degrees

• 270 degrees

• 180 degrees

If the probability of an event B is 0.6, what is the probability of B or A happening?

• 0.8

• 0.4

• 0.6

• 1.0