3 years ago

Someone please help me !!

Mathematics

1 answer:

wariber [46]3 years ago

3 0

Answer:

B. 56

l hope it is correct or maybe

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true of false the first distribution shown below has a smaller standard deviation than does the second distribution. 11,12,13,14

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3 years ago

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the height of the Statue of Liberty is 92 m. This about .27 the height of the Hancock Building in Chicago. What is the approxima

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3 years ago

Simplify the expression fraction with numerator of the square root of negative four and denominator of the quantity three plus i

Alex787 [66]

Answer:

$\frac{-4+2i}{5}$

Step-by-step explanation:

We are given the expression, $\frac{\sqrt{-4}}{(3+i)-(2+3i)}$

On simplifying, we have,

$\frac{2i}{3+i-2-3i}$

i.e. $\frac{2i}{1-2i}$

Now, we will rationalize the expression,

i.e. $\frac{2i}{1-2i}\times \frac{1+2i}{1+2i}$

i.e. $\frac{(2i)\times (1+2i)}{(1-2i)\times (1+2i)}$

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Since, $i^{2}=-1$ , we get,

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i.e. $\frac{-4+2i}{5}$

So, the simplified expression is $\frac{-4+2i}{5}$ .

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3 years ago