Answer:
$20 x 122% = $24.40
or look at it this way:
$20 x 1.22 = $24.40
Step-by-step explanation:
Answer:
29cm
Step-by-step explanation:
just add them all up
Answer:
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Step-by-step explanation:
Given

Required
The standard deviation
First, calculate the expected value E(x)

So, we have:


Next, calculate E(x^2)

So, we have:


The standard deviation is:




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<em> --- approximated</em>