Step-by-step explanation:
the mistake was made when the value of cos 3 pi over 2 was calculated.
tan(A-B)= ?since tan=sin/cos
<u>sin</u><u>(</u><u>A-B</u><u>)</u> = <u>sinAcosB-cosAsinB</u>
cos(A-B) cosAcosB+sinAsinB
divide by cos on the RHS
tan(A-B)= <u>tanA-tanB</u>
1+tanAtanB
The probability of the next pizza not being cheese is
P(not cheese) = 100 - P(cheese)
the probability of it being cheese is 21/(total)
Total = 21 + 14 + 23 + 14
Total = 72
So, P(cheese) = 21/72 x 100
which is roughly 29%
So P(not cheese) = 100 - 29 = 71%
Answer:
3
Step-by-step explanation:
12 ÷ 4 = 3
based on the given results, the coefficient of variation can be found to be 45.54.
<h3>what is the coefficient of variation?</h3>
first, find the mean:
= (30 + 60 + 90 + 45) / 4
= 56.25
find the standard deviation using a spreadsheet:
= 25.61737691
the coefficient of variation is therefore:
= standard deviation / mean x 100
= 25.61737691 / 56.25 x 100
= 45.54
find out more on the coefficient of variation at brainly.com/question/13293164.
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