Answer:
<h2>s = 66</h2>
Step-by-step explanation:
s + 24 = 90 <em>subtract 24 from both sides</em>
s + 24 - 24 = 90 - 24
s = 66
Answer:
0.15 or 15%
Step-by-step explanation:
Since lengths are uniformly distributed, the probability that a class period runs between a two exact times is:

In this case, a = 47.0 and b = 52.0 minutes.
The probability that a given class period runs between 50.25 and 51.0 minutes is:

The probability is 0.15 or 15%.