Mathematics Challenge

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

• 3x - 2y - 5z

• 3x + 2y + 5z

• 3x + 2y - 5z

• 3x + 2y + 5z

Solve the linear equation: 2x + 3 = 7

• x = 4

• x = 5

• x = 2

• x = 3

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

• x = 3

• x = 2

• x = 5

• x = -2

What is the probability of rolling a prime number on a fair six-sided die?

• 1/2

• 1/4

• 1/5

• 1/3

Calculate the mean of the following data set: 5, 7, 9, 11, 13

• 7

• 9

• 10

• 15

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

• (x + 5)(x + 1)

• (x + 2)(x + 3)

• (x + 1)(x + 6)

• (x + 4)(x + 2)

Determine the slope of the line passing through the points (2, 3) and (4, 7)

• 2

• 1

• 3

• 4

Solve the equation system: 2x + y = 5, x - 3y = -2

• {'x': 1, 'y': 2}

• {'x': 4, 'y': 0}

• {'x': 2, 'y': 3}

• {'x': 3, 'y': 1}

If the odds of winning a raffle are 1 in 20, what is the probability of not winning?

• 1/20

• 18/20

• 2/20

• 19/20

What is the mode of the following data set: 3, 5, 7, 5, 9, 5

• 9

• 7

• 5

• 3