Respuesta :
Answer:
160:340
Step-by-step explanation:
The hours between 2:00pm and 4:00pm is 2 hours. If originally 350 freshman and 200 sophomores are at the carnival, and 20 freshman leave every hour, we can determine how many freshman left in 2 hours:
[tex]=20\cdot{2}=40[/tex]
and if 35 sophomores arrive every half our, we know that for every two hours there is 4 half hours, therefore:
[tex]=35\cdot{4}=140[/tex]
The amount of freshman at 4:00pm:
[tex]200-40=160[/tex]
and the amount of sophomores:
[tex]200+140=340[/tex]
the ratio is 160:340
Answer:
f(4)=350−20(4)200+35(4)=270340=2734.
Step-by-step explanation:
Let x be the number of half-hour intervals since 2:00 p.m.
The number of freshmen can be modeled by P(x)=350−20x and the number of sophomores can be modeled by Q(x)=200+35x.
There are 4 half-minute intervals in two hours, so f(4)=350−20(4)200+35(4)=270340=
27/34.
