
Haz la sustitución:


Para confirmar el resultado:


Sustituye:


(Te dejaré confirmar por ti mismo.)

Sustituye:



Sustituye:


Podemos hacer que esto se vea un poco mejor:


9.08 divided by 9 is 1.008888889
-2x + 6 - 13x + 16
= -15x + 22
The probability of an 8th grader winning is : 14/42 which reduces to 1/3
the simulation would be : # 3 <====
because u will have 6 equal sections on ur spinner...with each section representing 7 people
one section representing 9th graders...so their is 7 of them
2 sections representing 8th graders....so their is 7 * 2 = 14 of them
and 3 sections representing 7th graders....7 * 3 = 21 of them