11.52 72×3=216x48÷100÷9= 11.52
Answer:
The last one
Step-by-step explanation:
Because it tells you what y is
The estimate would be 1200.
We will set up a proportion for this. 10 out of 60 of the sample were tagged, so that is the first ratio. The 200 that were tagged would be in the numerator of the second ratio (10 was the portion tagged, and 200 is the portion tagged, so they both go on top). We do not know the total number so we use a variable:
10/60 = x/200
Cross multiply:
10*x = 60*200
10x = 12000
Divide both sides by 10:
10x/10 = 12000/10
x = 1200
Answer:
The second option
Step-by-step explanation:
This is because the more samples she has, the closer her experimental probability will be to the real value.
