ACT Math

How do you calculate the product of complex numbers?

• Multiply the real parts and the imaginary parts separately, then combine them.

• Add the real parts and the imaginary parts separately.

• Multiply the real parts and add the imaginary parts.

• Subtract the imaginary parts from the real parts.

What is the relationship between the angles in a trapezoid?

• The angles are all equal to 90 degrees.

• The sum of the angles on the same side is supplementary (adds up to 180 degrees).

• The angles opposite each other are equal.

• The sum of all angles in a trapezoid is 360 degrees.

How do you convert a fraction to a percentage?

• Multiply the numerator by the denominator and divide by 100.

• Divide the numerator by the denominator and multiply by 100.

• Add the numerator and denominator, then multiply by 100.

• Subtract the numerator from the denominator and multiply by 100.

What is the significance of the coordinates in a Cartesian plane?

• Coordinates (x, y) represent the position of a point in a two-dimensional space.

• Coordinates indicate the distance between two points.

• Coordinates are used to measure angles in a triangle.

• Coordinates represent the area of a shape.

How do you find the percentage of a total?

• Percentage = (part/total) × 100.

• Percentage = (total/part) × 100.

• Percentage = (part + total) × 100.

• Percentage = (total - part) × 100.

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

• 180 degrees

• 360 degrees

• 270 degrees

• 90 degrees

How do you reflect a point over the y-axis?

• (-x, y)

• (x, -y)

• (y, x)

• (y, -x)

What is the formula for finding the area of a triangle?

• Area = (1/2) × base × height.

• Area = base × height.

• Area = (1/3) × base × height.

• Area = base + height.

What is the definition of a reflection in geometry?

• A transformation that rotates a figure around a point.

• A transformation that flips a figure over a line, creating a mirror image.

• A transformation that enlarges or reduces a figure proportionally.

• A transformation that translates a figure to a different location.

What is the formula for calculating the area of a rectangle?

• Area = length × width.

• Area = length + width.

• Area = length - width.

• Area = length ÷ width.