you flip a coin. what is p(not heads)? write your answer as a fraction or whole number.

Explanation:

Step1: Identify total outcomes

A coin - flip has 2 possible outcomes (heads or tails). So, the total number of outcomes $n = 2$.

Step2: Identify favorable outcomes

The event of "not heads" means getting tails. There is 1 favorable outcome for getting tails, so $m = 1$.

Step3: Calculate probability

The probability formula is $P(A)=\frac{m}{n}$. Substituting $m = 1$ and $n = 2$, we get $P(\text{not heads})=\frac{1}{2}$.

Answer:

$\frac{1}{2}$