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Troyanec [42]
3 years ago
14

This is for math to get my grade up. PLEASE HELP ASAP

Mathematics
1 answer:
koban [17]3 years ago
4 0

Answer:

the correct answer is b

Step-by-step explanation:

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5 {r}^{2}  - 13r - 6 = 0 \\ a = 5 \\ b =   - 13 \\ c =  - 16 \\

<em>r</em><em>=</em><em> </em><em><u>-</u></em><em><u>(</u></em><em><u>-</u></em><em><u>1</u></em><em><u>3</u></em><em><u>)</u></em><em><u>±</u></em><em><u>></u></em>

<em><u>\sqrt{( - 13) {}^{2} }  - 4.5( - 6)</u></em>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>2</em><em>.</em><em>5</em>

<em>r</em><em>=</em><em> </em><em><u>1</u></em><em><u>3</u></em><em><u>±</u></em><em><u>1</u></em><em><u>7</u></em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em>

<em>r</em><em>=</em><em><u>1</u></em><em><u>3</u></em><em><u>+</u></em><em><u>1</u></em><em><u>7</u></em>

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<em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em>

<em>r = 2 \\ r =  \frac{ - 2}{5}</em>

<em>this \: the \: answer \: your \: question \\  \\ mark \: me \: as \: a \: brainlist \: plz</em>

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