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algol13
3 years ago
12

Find the discrimanant and the number of real roots for this equation x^2+2x+8=0

Mathematics
1 answer:
balu736 [363]3 years ago
4 0

\bf \qquad \qquad \qquad \textit{discriminant of a quadratic} \\\\\\ \stackrel{\stackrel{a}{\downarrow }}{1}x^2\stackrel{\stackrel{b}{\downarrow }}{+2}x\stackrel{\stackrel{c}{\downarrow }}{+8}=0 ~~~~~~~~ \stackrel{discriminant}{b^2-4ac}= \begin{cases} 0&\textit{one root}\\ positive&\textit{two roots}\\ negative&\textit{no real roots}~~\textit{\Large \checkmark} \end{cases} \\\\\\ (2)^2-4(1)(8)\implies 4-32\implies -28

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Simon has $45.37

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Total amount of money that Simone now has = $15.45 + $7.37 + $22.55

Total amount of money that Simone now has = $45.37

Simon has $45.37

Learn more here: brainly.com/question/20521181

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Sedaia [141]

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x = $0.85 per pound = 19.85 pounds

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Let

x = $0.85 per pound

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x + y = 21 (1)

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From (1)

x = 21 - y

Substitute x = 21 - y into (2)

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y = 2.1 / 1.85

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3 years ago
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Answer:

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expression shows each factor rounded to the nearest whole number?

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