Answer:
There are a total of 4 + r + 6 marbles in the bag
The probability of a blue is 
The probability of a red is 
The probability of choosing a blue, replacing it and then a red is
× = [tex]\frac{4r}{100+20r+ r^{2} /[tex]
Step-by-step explanation:
The length of segments ab is 24
<u>Answer</u>:
Equation : y = 6
<u>Explanation</u>:
It is a straight line, cuts y axis and does not meet x axis.
Equation of the line is y = 6
Answer:
The mean is 13
Step-by-step explanation:
First you add up all of the numbers. In this case, it is 52.
Then you divide the number 52 by the number of number there are. In this case, there are 4 numbers.
After you do that you get the answer 13.
<em>Hope this helped :) !!!!</em>
<em>Please mark the brainliest</em>
<span>This would be a bell curve with a z-score of greater than +2.00, since 3 minutes is exactly two standard deviations greater than the mean of 2.00. Looking at a z-score table for the proportion of the curve that lies in the 1-tailed area greater than 2.00, we find that the value is .0228. This would be the probability that the conversation is over three minutes: 0.0228 or 2.28%.</span>
