Answer: 23
Step-by-step explanation:
Answer:
210 mph
Step-by-step explanation:
speed of jet = x
headwind: speed = x - 27
time taken = 1134.6/(x - 27)
tailwind: speed = x + 27
time taken = 1469.4/(x + 27)
same amount of time:
1134.6/(x - 27) = 1469.4/(x + 27)
Cross multiply,
1134.6(x + 27) = 1469.4(x - 27)
1134.6x + 30634.2 = 1469.4x - 39673.8
334.8x = 70308
x = 210 mph
Answer:
A and B are not independent events because P(A|B)≠P(A)
is the correct answer.
Step-by-step explanation:
If A and B are independent then we must have
P(AB) = P(A) P(B) and also
P(A/B) = P(A)
We are given that
A and B are two events.
Let P(A)=0.5 , P(B)=0.25 , and P(A and B)=0.15 .
P(A/B) = P(AB)/P(B) = 0.15/0.5 = 0.3
i.e. P(A/B) is not equal P(A)
Similarly P(B/A) = P(AB)/P(A) = 0.15/0.25 = 0.6 not equal to P(B)
Hence A and B are not independent.
Hi
two lines are parallel only if they have the same slope.
So : 3x+4y = 12
4y = 12 -3x
y = 12/4 - 3x/4
y = 3 - 3/4 X
y = -3/4 X +3
Slope is -3/4
and 6x+2y = 6
2y = 6 -6x
y = 6/2 - 6x/2
y = 3 - 3X
y = -3X +3
Slope is = -3
As -3/4 ≠ -3 then the two lines are not parallel.
