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2 years ago

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A science club is made up of 18 girls and 12 boys. Four of the girls and 5 of the boys are also in the Spanish club. What percen

t of the science club is also in the Spanish club?

1 answer:

valkas [14]2 years ago

7 0

Answer:

its 30% i did the test

Step-by-step explanation:

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2 years ago

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Umnica [9.8K]

Answer:

(a) \frac{-1i}{2}-1[/tex]

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Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

$\frac{1-2i}{2i}=\frac{1}{2i}-\frac{2i}{2i}=\frac{-1i}{2}-1$

(b) We have given expression $\frac{5-2i}{5+2i}$

After rationalizing $\frac{5-2i}{5+2i}\times \frac{5-2i}{5-2i}=\frac{(5-2i)^2}{25+4}=\frac{25+4i^2+20i}{29}=\frac{20i+21}{29}$

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4 years ago