Grade 9 Mathematics part 1

Simplify the expression: 3x^2 + 2x - 5

• 3x^2 + 2x + 5

• 3x^2 + 2x - 5

• 3x^2 + 2x + 5x

• 3x^2 - 2x - 5

Factorize the expression: 4x^2 - 9

• (2x - 3)(2x + 3)

• (2x + 3)(2x + 3)

• (2x - 3)(2x - 3)

• (4x - 9)(x + 1)

Find the value of x in the equation: 2x + 3y = 12, 3x - 2y = 4

• x = 4, y = 2

• x = 8, y = 1

• x = 2, y = 5

• x = 6, y = 3

Graph the line with the equation: y = 2x + 3

• Graph the line with the equation y = 2x + 3 by plotting the y-intercept at (0, 3) and using the slope of 2 to find another point on the line.

• Graph the line with the equation y = 2x - 3 by plotting the y-intercept at (0, -3) and using the slope of 2 to find another point on the line.

• Graph the line with the equation y = 3x + 2 by plotting the y-intercept at (0, 2) and using the slope of 3 to find another point on the line.

• Graph the line with the equation y = -2x + 3 by plotting the y-intercept at (0, 3) and using the slope of -2 to find another point on the line.

Calculate the measure of angle A in a right-angled triangle where angle B = 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

• 120 degrees

Find the value of x in the equation: 5x - 3 = 2x + 7

• 7/5

• 4/3

• 5/2

• 10/3

Determine the type of angle formed by the lines with the equations: y = 2x - 1 and y = -2x + 5

• Perpendicular angle

• Acute angle

• Obtuse angle

• Right angle

Convert the decimal number 25.75 to binary

• 11100.01

• 10101.01

• 10011.10

• 11001.11

Find the perimeter of a triangle with sides of length 5cm, 7cm, and 9cm

• 12cm

• 21cm

• 15cm

• 25cm

Solve the equation: 3x^2 - 5x + 2 = 0

• x = 1/2 or x = 1/3

• x = 1 or x = 2/3

• x = -1 or x = -2

• x = 3 or x = 4