Step-by-step explanation:
<u>Simplify for x by subtracting each side by 1;</u>
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(300 students) because each classroom has 25 students then you times that by 12 and you get 300.
9514 1404 393
Answer:
68%
Step-by-step explanation:
According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.
Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.
68% of students wait between 15 and 25 minutes
Answer:
x=6, x=-8
Step-by-step explanation: i used the symbolab calculator online to solve this.