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Pepsi [2]
3 years ago
7

V^2+3v-5=0 Round to nearest hundredth

Mathematics
1 answer:
natulia [17]3 years ago
6 0
V² + 3v - 5 = 0
v = -(3) ± √((3)² - 4(1)(-5))
                    2(1)
v = -3 ± √(9 + 20)
                2
v = -3 ± √(29)
            2
v = -3 ± 5.38
            2
v = -1.5 ± 2.69
v = -1.5 + 2.69    or    v = -1.5 - 2.69
v = 1.19    or    v = -3.19
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Hope this helps!
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\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
\textit{against the wind}&1720&x-y&5\\
\textit{with the wind}&1720&x+y&4
\end{array}
\\\\\\
\begin{cases}
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344=x-y\implies \boxed{y}=x-344\\
---------------\\
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430=x+y\implies 430=x+\left( \boxed{x-344} \right)
\end{cases}
\\\\\\
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Step-by-step explanation:

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