Answer:
B) 7
Step-by-step explanation:
Let the number be x
4x + 12 = 40
4x = 40 -12
4x =28
x = 28/4
x = 7
Answer:7
Step-by-step explanation:
Thee correlation factor formula for two variables is
(r) =[ nΣxy – (Σx)(Σy) / Sqrt([nΣx^2 – (Σx)^2][nΣy^2 – (Σy)^2])].
A). as per the formula the correlation factor for the given data is 0.94.
B). the month of September has the highest correlation as 0.94 is much closer to 1 than 0.89.( note: 1 denotes the perfect correlation and 0 denotes no correlation at all)
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Cross multiply.
5.4x=9*25.8
5.4x=232.2 Divide both sides by 5.4
x=43
Answer:answer is 387
Step-by-step explanation:ok got it