Answer:
3137
Step-by-step explanation:
The decay factor is 400/110,000 = 1/275 in 30 hours. Assuming an exponential decay, the equation for the number remaining can be ...
n(t) = 110,000·(1/275)^(t/30)
Then after 19 hours, the number remaining is ...
n(19) = 110,000·(1/275)^(19/30) ≈ 3137
There will be about 3137 bacteria after 19 hours.
Answer:
That is truth
Step-by-step explanation:
Remember that sin(x-y)= sin(x)*cos(y) + sin(y)*cos(x)
Lets evaluate x=360, y=theta
sin(360-theta)=sin(360)*cos(theta) -sin(theta)*cos(360)
Also, remember that sin(360)=sin(0)=0
Cos(360)=cos(0)=1
Thus
Sin(360-theta)=-sin(theta)
The correct answer is 2.5. Not too sure how to get that answer but my math test had this question and that was the answer.
A square rotated about the y-axis produces a cylinder.
Camping is 50
Swimming is 60
Biking is 35
Canoeing is 30
So Swimming and Camping combined is 110. So 45 more people picked Swimming and Camping.
