15/100*x=39
x=39*100/15
x= 260 is the total number of people who were asked
The range is the high and low points.
So (5, 2]
No because Pi is an irrational number so adding 2 to Pi will also be irrational.
Answer:

Step-by-step explanation:
Using the formula for the exponential decay that is
, we have N=
,
and k=0.1374.
Thus,
becomes



Taking log on both sides, we get




Answer:
First one is 25/2
Step-by-step explanation:
12×2+1=25/2
9×4+1=36/4
cross multiply and you get
100/
divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore