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mixer [17]
3 years ago
9

before cam broke his right arm he was able to type nine words per minute on his phone after he broke his arm he had to use his l

eft hand for a while and he could only type 6 words per minute what is the difference between the number of words he could type in five minutes before and after he broke his arm
Mathematics
2 answers:
dsp733 years ago
8 0
Before would be 45 words in five minutes and after would be 30 words 
Lena [83]3 years ago
4 0
Before he broke his arm: 45 words in 5 minutes

After he broke his arm: 30 words in 5 minutes

9*5=45 6*5=30

Hope this helps... mark as Brainliest plz
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<h3>Zeros of function are x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}</h3>

<em><u>Solution:</u></em>

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-x^2 + 2x+1 = 0\\\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

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Simplify\\\\x=\frac{-2 \pm \sqrt{4+4}}{-2}\\\\x =\frac{-2 \pm \sqrt{8}}{-2}\\\\Simplify\\\\x =\frac{-2 \pm 2 \sqrt{2}}{-2}\\\\x = 1 \pm \sqrt{2}

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x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}

Thus zeros of function are x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}

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