47% of citizens in a district voted in the last election. 21% of citizens in the district are under 18. being younger than 18 and voting in the last election are mutually exclusive. for a randomly selected citizen in the district, answer the following: what is the probability the citizen voted in the last election or was under 18?

68% probability the citizen voted in the last election or was under 18.

Step-by-step explanation:

Two events are said to be mutually exclusive if one event precludes the other. That means that if A and B are mutually exclusive, the probability of A and B happening at the same time is 0%.

So, the probability of a citizen voting in the last election AND being under 18 is 0%.

What is the probability the citizen voted in the last election or was under 18?

Since these events are mutually exclusive, this probability is the sum of each separate probability.

So there is a 47+21 = 68% probability the citizen voted in the last election or was under 18.

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99