Answer:
a) 10.6; 48.7; within
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 29.6
Standard deviation = 6.35
"According to the Empirical Rule, the ages of nearly all lead actresses will be between______________and_____________ years.
Nearly all(99.7%) will be within 3 standard deviations from the mean.
So from 29.6 - 3*6.35 = 10.6 years to 29.6 + 3*6.35 = 48.7 years.
Anna was 11-years old, so she was within this range.
So the correct answer is
a) 10.6; 48.7; within
Recall your d = rt, distance = rate * time.
keeping in mind that, the distance upstream as well as downstream is the same, 90 miles, let's say the boat has a speed rate of "b", thus when the boat was going upstream, it really wasn't going "b" fast, it was going "b - 8", because the 8mph speed of the current is subtracting from it. Likewise, when the boat was going downstream, it wasn't going "b" fast either, because the current was adding to it, since it was going with the current, then it was really going "b + 8" fast.
now, let's notice the trip took a total of 6 hours, thus, if the trip downstream took say "t" hours, then the trip upstream took the slack from 6 and "t", that is, it took "6 - t" hours.


since the rate of speed wouldn't be a negative unit, then is not -2.
Answer:
5.8x2.4=13.92
Step-by-step explanation:
if you put the two halves of a triangle like this together it makes a square then you times the length and width together and thats your triangle area
You can probably search it up it should be easy to find