The coefficient of correlation is independent of change of scale and origin of the variable X and Y. Change of origin means some value has been added or subtracted in the observation. If we divide all observations with x then new mean =initial mean/x.
Answer:
a = x
b = 5
Step-by-step explanation:
Answer:
Step-by-step explanation:
Ratio of length : width = 4 : 7
Length = 4x
Width = 7x
Longer side = 31.5 in
⇒ 7x = 31.5
Divide both sides by 7
x = 31.5/7
x = 4.5
length = 4x
= 4*4.5
l = 18 in
width = 31.5
w = 31.5 in

= 2*18 + 2*31.5
= 36 + 63
= 99 in

= 18*31.5
= 567 in²
Answer:
The answer would be...5(x + 2y minus 3)