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riadik2000 [5.3K]
3 years ago
8

URGENT!!! Can someone please answer these 2 questions and show the working out?

Mathematics
1 answer:
Alik [6]3 years ago
4 0

A) Factor using the difference of squares formula: a^2 - b^2 = (a+b) (a-b)

a = X and B = 33

(x+33) (x-33)

b)

67^2 - 33^2 =

(67 * 67) - (33 * 33) =

4489 - 1089 = 3400

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Yes it is correct I’m pretty sure
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2 years ago
find the value of an investment of $3500 for 3 years at an interest rate of 5.6% if the money is compounded weekly
sergeinik [125]
\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}\to &\$3500\\
r=rate\to 5.6\%\to \frac{5.6}{100}\to &0.056\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{weekly, thus fifty two}
\end{array}\to &52\\
t=years\to &3
\end{cases}

\bf A=3500\left(1+\frac{0.056}{52}\right)^{52\cdot 3}\implies A=3500\left( \frac{6507}{6500} \right)^{156}
\\\\\\
A\approx 4139.9038869337
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3 years ago
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I am Lyosha [343]

Answer:

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