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# When do you use the addition rule?

Updated: 9/19/2023

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Q: When do you use the addition rule?
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### What function do you use to calculate the probabilities of compound events?

To calculate the probabilities of compound events, you can use the multiplication rule or the addition rule, depending on whether the events are independent or mutually exclusive. The multiplication rule is used when the events are independent, and you multiply the probabilities of the individual events. The addition rule is used when the events are mutually exclusive, and you add the probabilities of the individual events.

### What is the rule of addition of integers?

negetive integers are not closed under addition but positive integers are.

### If two events A and B are mutually exclusive what does the special rule of addition state?

If two events A and B are mutually exclusive, the special rule of addition states that the probability of one or the other event's occurring equals the sum of their probabilities. This rule is expressed in the following formula:Special Rule of Addition(5-2)Equation 5-2

### What is the product rule of probabilty?

"and" means multiplication "or" means addition

### What are two rules historians use to determine the quality of a primary source?

Historians use the time and place rule to determine how close to the event was the person describing the event and how much time was between the event and when the event was described. In addition, they use the bias rule. Documents must be compared with relatedsources and pieces of evidence.

### The Special Rule of Addition is used to combine?

Mutually exclusive events.

### How do you make a negative and a positive rule sign?

The rule(s) depend on whether you are looking at multiplication/division, addition or subtraction.

### What is the math rule that you always remember?

The precedence rule PEMDAS which is a mnemonic for Parentheses Exponentiation Multiplication Division Addition Subtraction

yes

### Polygonal rule of vector addition?

If the vectors form a polygon, their sum is zero..

### What is the rule you use to determine the number of significant figures in the results of addition and subtraction?

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.