Error Analysis: Which statement best describes the error in finding the distance between the points (7,5) and (-2, 1)?
AB = V(202 – 21)2 + (y2 – yı)?
AB 117 - 5)2 +(-2 - 1)
AB=
22+(-3)
AB = 14 + 9
AB = V13
AB 3.6
The formula is incorrect.
There is an error identifying the 2- and y-values to subtract.
There is a subtraction error.
The square root was calculated incorrectly.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula