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Semmy [17]
3 years ago
6

Please helpp mecwith this question ​

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

\frac{1}{R}  =  \frac{1}{8}  +  \frac{1}{12}  \\

\frac{1}{R}  =  \frac{1 \times 3}{8 \times 3}  +  \frac{1 \times 2}{12 \times 2}  \\

\frac{1}{R}  =  \frac{3}{24}  +  \frac{2}{24}  \\

\frac{1}{R}  =  \frac{3 + 2}{24}  \\

\frac{1}{R}  =  \frac{5}{24}  \\

Inverse both sides

\frac{R}{1}  =  \frac{24}{5}  \\

R =  \frac{24 \times 2}{5 \times 2}  \\

R =  \frac{48}{10}  \\

R = 4.8 \:  \: Ω

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

The correct answer is (( B )) .

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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Step-by-step explanation:

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Step-by-step explanation:

For each item, there are only two possible outcomes. Either they are defective, or they are not. Items are independent of each other. So we use the binomial probability distribution to solve this question.

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