ACT math practice

Front

What is the mean of the following rainfall amounts: 1.7", 2.2", 0.5", 0.72", and 1.1"?

Back

The mean amount of rainfall is 1.2".

Front

How do you add the vectors a = (3, 6) and b = (2, -5)?

Back

The result of adding the vectors is (5, 1).

Front

List all the positive factors of 10.

Back

The positive factors of 10 are 1, 2, 5, 10.

Front

What is the equivalent expression for (5y + 2)(y - 3)?

Back

The equivalent expression is found in option D.

Front

How do you express x in terms of y for the equation 4x + 8y = 16?

Back

x = -2y + 4.

Front

What is the formula for calculating the mean of a set of numbers?

Back

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

Front

What are vectors and how are they represented?

Back

Vectors are quantities that have both magnitude and direction, represented as ordered pairs (x, y).

Front

What is a factor in mathematics?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of their variables.

Front

How do you simplify the expression (5y + 2)(y - 3)?

Back

You apply the distributive property to simplify the expression.