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Alina [70]
3 years ago
5

-7n2 + 5n + 2 = 0

Mathematics
1 answer:
ycow [4]3 years ago
5 0

Answer:

Step-by-step explanation:

D=5^2-4*(-7)*2

D=25+56

D=81

two real rational solutions, since 81 is a perfect square

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11000 is compounded semiannually at a rate of 12% for 21 years. Find the total amount in the compound interest account
marishachu [46]

\bf ~~~~~~ \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\dotfill &\$11000\\
r=rate\to 12\%\to \frac{12}{100}\dotfill &0.12\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{semiannually, thus twice}
\end{array}\dotfill &2\\
t=years\dotfill &21
\end{cases}


\bf A=11000\left(1+\frac{0.12}{2}\right)^{2\cdot 21}\implies A=11000(1.06)^{42}\implies A\approx 127127.359416

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4 years ago
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Morgarella [4.7K]

Answer:

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Step-by-step explanation:

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y+1=2(x-6)

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6 0
3 years ago
the length of an office building is x feet and the width is x+4 feet. write the polynomial that represents the area. find the ar
ki77a [65]
L(w) = area of rectangle

x(x+4)
If x = 12...

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144 + 48  Add
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Step-by-step explanation:

If the x² coefficient is:

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Negative, the gaph will open down and have a maximum

7 0
3 years ago
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kondaur [170]
X=4(6)+3(6)+7(6)
or
84=4x+3x+7x
4 0
3 years ago
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