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svetoff [14.1K]
3 years ago
8

PLSSSS ASAPPP!!!!!!!!!!

Mathematics
2 answers:
mojhsa [17]3 years ago
6 0

Answer:

D. my answer for your question

konstantin123 [22]3 years ago
3 0
The answer is 13, i got this by using the pythagorean theorem. a^2 + b^2 = c^2. in this case it would be 84^2 + b^2 = 85^2. then that would turn into 7056 + b^2 = 7225, subtract both sides by 7056 to get b^2 = 169, then square 169 to get 13 :)
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The product of a number and 3 increased by 9 is less than -42<br><br><br> TRANSLATE
nikitadnepr [17]

Answer:

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Step-by-step explanation:

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How many square feet of outdoor carpet will we need for this hole? Need pronto
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Tju [1.3M]

Answer:

\boldmath-5-2i\sqrt{\boldmath11}

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The not simplified form is -5-\sqrt{-44}

you know that \sqrt{a\times b} = \sqrt{a} \times\sqrt{b} is true a and b are both positive or one of it is negative (not both of them).

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So, \sqrt{-44} = \sqrt{-1\times4\times11}=\sqrt{-1}\times\sqrt{4}\times\sqrt{11}=i\times2\times\sqrt{11}         (\sqrt{4}=2)

\therefore -5-\sqrt{-44} = -5-2i\sqrt{11}

(NOTE : You must know that \boldmath\sqrt{\boldmath-1} is written as \boldsymbol i )

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