we are given

we can see that
degree of numerator = degree of denominator =2
so, we can divide both numerator and denominator by n^2
and we get


now, we can simplify it

now, we can plug n=inf



...............Answer
Step-by-step explanation:
The ratio of Ali mass to Williams mass is
6 : 3
= 2 : 1
Option 2 is the correct answer
Answer:
The probability that 8 mice are required is 0.2428.
Step-by-step explanation:
Given : A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have contracted the disease. If the probability of contracting the disease is two sevenths.
To find : What is the probability that 8 mice are required? The probability that that 8 mice are required is nothing ?
Solution :
Applying binomial distribution,

Where, p is the probability of success 
q is the probability of failure q=1-p, 
n is total number of trials n=8
r=3
Substitute the values,




Therefore, the probability that 8 mice are required is 0.2428.
3x^2 + 6x - 10 = 0
x = [-6 +/- sqrt(^2 - 3*3*-10)] / 2*3
= 1.08 and -3.08
Other x -intercept is (-3.08,0)
B= 20°
and c = 160°
b is equal to the given angle, b = 20°
c is 180 - 20 = 160°