3 years ago

Please i need help!

Mathematics

1 answer:

Naddik [55]3 years ago

6 0

Hope this helps :)

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Pls help ahahahhahaha

Vladimir [108]

Step-by-step explanation:

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<h2>stay safe healthy and happy...</h2>

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3 years ago

Please it’s urgent ........

grigory [225]

Answer:

77 degrees

Step-by-step explanation:

The angles of a triangle must add up to 180 degrees

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3 years ago

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ioda

Answer:

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Step-by-step explanation:

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3 years ago

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Trisha has two boxes of marbles

ololo11 [35]

Answer:

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3 years ago

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Which of the following is evaluated to 18-√-25?<br> 1) 5i<br> 2) 18-5i<br> 3) 18+5i<br> 4) 23

xz_007 [3.2K]

Option 2: 18-5i is the right answer

Step-by-step explanation:

Given

$18-\sqrt{-25}$

When there is a negative number in radical, a new complex number iota denoted by i is introduced which is equal to $\sqrt{-1}$

So we will solve the given expression

$18-\sqrt{-25}\\= 18- (\sqrt{25*-1})\\= 18 - (\sqrt{25} * \sqrt{-1})\\= 18 - (5*i) = >\sqrt{-1} = i\\= 18 - 5i$

Hence,

Option 2: 18-5i is the right answer

Keywords: Iota, complex numbers

Learn more about complex numbers at:

#LearnwithBrainly

6 0

4 years ago