Answer: 8x+24
Step-by-step explanation:
The probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes is 0.16 or 16%.
<h3>What is normally distributed data?</h3>
Normally distributed data is the distribution of probability which is symmetric about the mean.
The mean of the data is the average value of the given data.
The standard deviation of the data is the half of the difference of the highest value and mean of the data set.
The times of the runners in a marathon are normally distributed, with
- Mean of 3 hours and 50 minutes
- Standard deviation of 30 minutes.
Refere the probabiliity table attached below. The probability of Z being inside the 1 Standard daviation of mean is 0.84.
The probability of runner selected with time less than or equal to 3 hours and 20 minutes,

Thus, the probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes is 0.16 or 16%.
Learn more about the normally distributed data here;
brainly.com/question/6587992
Answer:
Well if you see the graph (-5, -5) is a total negative number that is in the 3 quadrant.
As for (-9,2) it goes to negative to positive.
Look at the graph and you will understand any questions ask me
hope this helps ☺
Answer:
The answer is 106
Step-by-step explanation:
angle B is equal to angle D
so do 91 + 15= 106
and the math at angle D is x - 15
hope this helps! :D