XYZ Corporation Check Your Understanding 4
On May 13, the XYZ Corporation
announced another decrease in
earnings. The price of their stock May 12
dropped to close at $45.72.
Express the net change from
May 12 to May 13 as a percent, to
the nearest tenth.
Trade Time
Chg
Open
52-week High
52-week Low
Sales in 100s
High
Low
49.98
4:00PM ET
-1.55
49.90
60.45
43.60
32000
51.40
50.60
Students, write your response!
Pen Deck Interactive Sade

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour. what is the cyclist average rate for the round trip in miles per hour ?

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.