Answer: <em><u>157 tickets </u></em>
Explanation:
The people not showing up for the flight can be treated as from Binomial distribution.
The binomial distribution B(n, p) is approximately close to the normal i.e. N(np, np(1 − p)) for large 'n' and for 'p' and neither too close to 0 nor 1 .
Now, Let us assume 'n' = n
and we are given
p=0.15
So now B(n,0.15n) follows Normal distribution
u=n
= 0.15n
We have to calculate P(X<144) with 99% accuracy
P(X<144) = P(Z<z)
where;
z=
z score for 99% is 2.33
i.e.
solving this we will get one root nearly equal to 157 and other root as 133
<u><em>Hence the answer is 157.</em></u>
Answer:
i have no anser
Step-by-step explanation:
Answer:
irrational
Step-by-step explanation:
because √3 is irrational
Solution:
3x - 5 = -2x²
2x² + 3x - 5 = 0
By splitting the middle term,
2x² - 2x + 5x - 5 = 0
2x (x - 1) + 5 (x - 1) = 0
(2x + 5)(x - 1) = 0
So, 2x + 5 = 0
x = -5/2
(OR)
x - 1 = 0
x = 1
The roots of 2x² + 3x - 5 = 0 are: A. x = 1 & B. x = -5/2