ACT Math

Front

What is the formula to calculate the mean of a set of numbers?

Back

Mean = (Sum of all values) / (Number of values)

Front

How do you convert feet to inches?

Back

Multiply the number of feet by 12 (1 foot = 12 inches).

Front

What is the product of two complex numbers in the form (a + bi)(c + di)?

Back

(ac - bd) + (ad + bc)i.

Front

How do you interpret a scale on a map?

Back

The scale indicates the ratio of a distance on the map to the actual distance it represents.

Front

What is the formula for the perimeter of an isosceles right triangle?

Back

Perimeter = 2 * leg + hypotenuse, where leg = hypotenuse / √2.

Front

What is the definition of a complex number?

Back

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.

Front

How do you find the distance between two points on a map using a scale?

Back

Distance = (Distance on map) * (Scale factor).

Front

What is the relationship between the sides of an isosceles right triangle?

Back

The legs are equal in length, and the hypotenuse is √2 times the length of each leg.

Front

How do you calculate the product of complex numbers?

Back

Use the distributive property (FOIL) to multiply and combine like terms.

Front

What is the significance of the hypotenuse in a right triangle?

Back

The hypotenuse is the longest side and is opposite the right angle.