The average teenager needs between 820 400 cal per day depending on activity levels in spurts of growth. (it takes more calories to sustain a growing active the average concentration camp prisoners receive between 800 and 1500 cal worth of food per day. do that math. what percentage of their needed calories were they receiving on the lower end and on the high end?

Which shows the pre image of triangle xyz

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

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.