# Math Help: More ACT Formulas to Remember

09/30/2015

## ACT Math Formulas to Memorize

If you are taking the ACT, you do not get the same band-aid SAT takers get. Instead of having a list of the math formulas you need, ACT takers have to remember them beforehand. Here are a few that you will likely use on your test.

### Slope Formula

To determine the slope of a line, choose two points on the line and divide the rise (how much the line goes up or down) by the run (how much the line goes left to right).

### Midpoint Formula

When you need to find the midpoint of a line, use this formula to determine the coordinates.

### Average/Mean

Remember that the average is the same as the mean. To find the average of a set of numbers, divide the sum of all the numbers in the set by the amount of numbers in the set.

### Probability

The probability (P) of an event occurring is measured as a fraction (between 0 and 1) with 1 being 100% probability and 0 being 0%. Take the number of desired outcomes and divide by the number of possible outcomes. For example, if you want to know the probability of rolling a 3 on a six-sided di, it is 1 (because there is only one 3) over 6 (because there are 6 possibilities). To find the probability two, mutually exclusive events both occurring, multiply their probabilities. If you want to know the probability of rolling a 3 and then a 4, you would multiply 1/6*1/6 for 1/36.

### Distance Formula

If you know your Pythagorean theorem , this equation will be intuitive. To determine the distance between two points, you can make a right triangle from them. square each side and then take the square root of the sum to obtain the length of the hypotenuse.

## For Tutoring in Ocoee

For additional math help, call The Tutoring Center serving Ocoee and Windermere. We offer one-to-one tutoring in math, reading, writing, and test prep. Find out more about our academic programs and call 407-614-5980 to schedule a free diagnostic assessment.

### FREE CONSULTATION

Schedule your Free Diagnostic Assessment Today!