ACT Practice Test #2

Front

What is a repeating decimal?

Back

A repeating decimal is a decimal fraction that eventually repeats a sequence of digits indefinitely. For example, 0.62957 is a repeating decimal.

Front

How do you find the nth digit in a repeating decimal?

Back

To find the nth digit in a repeating decimal, determine the length of the repeating sequence and use modulo arithmetic to find the position within that sequence.

Front

What is the formula for the probability of an event?

Back

The probability of an event is calculated as the number of favorable outcomes divided by the total number of possible outcomes: P(E) = Number of favorable outcomes / Total outcomes.

Front

How do you calculate the probability of drawing a specific color marble from a bag?

Back

To calculate the probability of drawing a specific color marble, divide the number of marbles of that color by the total number of marbles in the bag.

Front

What is the standard form of a circle's equation?

Back

Front

How do you determine the center and radius of a circle from its equation?

Back

Front

What is exponential growth?

Back

Front

How do you evaluate an exponential function at a given point?

Back

Front

What is a mixture problem in mathematics?

Back

A mixture problem involves combining different substances and calculating the resulting concentration or quantity of a specific component.

Front

How do you calculate the concentration of a solution after adding a substance?

Back

To calculate the new concentration after adding a substance, use the formula: New concentration = (Amount of solute) / (Total volume of solution).