Answer:45
Step-by-step explanation:
Let the unit place be ‘x'
Tenth place be y
The number is 10y+x
x+y = 9 (according to the condition) (1)
Digits are interchanged Unit place' y ‘& tenth place ‘ x'
New no is 10x +y
This is 9 more than the original number
10x+ y = 10y+x +9
10x-x+y-10y = 9
9x-9y= 9
x-y = 1 (dividing by 9) (2)
Adding the two equations
2x = 10
x= 5
Substituting the value of x in first equation
y = 4
The number is 45, the original number is 54 this is 9 more of the new number.
Ans :45
Answer:
more the z-score more will be the extreme. therefore tallest man has high extreme
Step-by-step explanation:
Formula for z-score: 
where
X is height of tallest man
μ mean height
σ is standard deviation
z score for tallest is
z-score = 
similarly for shortest man
z-score = 
more the z-score more will be the extreme. therefore tallest man has high extreme
Answer:
B. 0
Step-by-step explanation:
Anything multiplied by 0 is 0
Answer:
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Step-by-step explanation:
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