Answer:
-8
Step-by-step explanation:
12<-3 (x + 4)
1. distribute to the -3 to the x and 4 and should get
<em><u>-3*x = -3x</u></em>
<em><u>-3*4 = -12</u></em>
<u>12< -3x - 12</u>
2. now you get rid of the common factors which is -12 so add 12 to both sides and should get
-12+12=0
12+12=24
<u>24< -3x</u>
3. to get x by itself you will have to get rid of -3, so how to do that is divide -3 to both side and should get
-3x/-3= x
24/-3= -8
<u>-8<x</u>
Median of 10, 55, 34, 21
First we arrange number in ascending or descending
10, 21, 34, 55 in ascending.
Median is the middle number and this is between 21 and 34.
We find the average:
(21 + 34) /2 = 55/2 = 27.5
Median is 27.5.
Answer:
Step-by-step explanation:
Here X no of flight that reach on time has two outcomes only and each trial is independent of the other.
Since sample size is large we approximate to normal with mean =np and variance =npq
i.e. X is N(152,19.10)
is used for converting to std normal variate
Continuity correction of 0.5 on either side of interval would be applied for x
a) 
=0.00
b)
=1.00
c) p is N(0.76, sqrtpq/n)=N(0.76,0.0095)
P(p diff>0.03) =
=0.00
B. (X+4)^2 is the correct answer
