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hjlf
3 years ago
13

Find the mean of this set of numbers.

Mathematics
1 answer:
mr_godi [17]3 years ago
6 0
Mean is basically average
basically find how many terms (there are 6 terms)
then add them all together
5+-11+7+12+-1+0 =12
then divide the sum by the number of terms
12 divided by 6=12/6=2

the answer is 2 or B
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Step-by-step explanation:

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Angle A and angle B are supplementary. Angle B and Angle C are supplementary  (given)


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Alisiya [41]

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let's bear in mind that a complex root never comes all by her lonesome, her sibling is always with her, the conjugate, so if 3 - i is there, 3 + i is also coming along, likewise if 0 + 4i is there, her sibling 0 - 4i is also there.

\bf \begin{cases} x=3-i\implies &x-3+i=0\\ x=3+i\implies &x-3-i=0\\ x=4i\implies &x-4i=0\\ x=-4i\implies &x+4i=0 \end{cases}\\\\[-0.35em] ~\dotfill\\\\ (x-3+i)(x-3-i)(x-4i)(x+4i)=\stackrel{y}{0} \\[2em] \underset{\textit{difference of squares}}{[(x-3)+i][(x-3)-i]}\underset{\textit{difference of squares}}{[x-4i][x+4i]}=0

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3 0
3 years ago
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