The Lovin' Lemon Company sells a 4-gallon jug of lemonade for $24. The Sweet and Sour company sells an eight-pack of one quart b
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Factorise both denominators
x² + 2x = x(x + 2) ← common factor of x
x² - 4 = (x - 2)(x + 2) ← difference of squares
Before subtracting we require common denominators
Multiply the numerator/denominator of the first fraction by (x - 2)
Multiply the numerator of the second fraction by x
= -
Distribute and simplify the numerator leaving the denominator
=
=
Answer:
Step-by-step explanation:
Given that in a certain store, there is a .03 probability that the scanned price in the bar code scanner will not match the advertised price.
Here X the number of items that will not match in the sample of 780 items is binomial because
i) there are two outcomes only
ii) Also each trial is independent of the other.
a) the expected number of mismatches
b) Var(x) =
Std dev (X) = 4.7642