2 years ago

Purchased computer from AE Enterprise worth rm3000 by cheque . Which debit and credit

Mathematics

1 answer:

pav-90 [236]2 years ago

7 0

Yes i loveing it they’re nive I guess

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If I fail this I fail the quarter. please help appreciate it

Dafna1 [17]

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3 years ago

How many terms are there in a geometric series if the first term is 4, the common ration is 3 and the sum of the series is 160

Marina CMI [18]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
S_n=160
\end{cases}$

$\bf 160=4\left( \cfrac{1-3^n}{1-3} \right)\implies 160=4\left( \cfrac{1-3^n}{-2} \right)\implies 160=-2(1-3^n)
\\\\\\
160=2(3^n-1)\implies \cfrac{160}{2}=3^n-1\implies 80=3^n-1
\\\\\\
81=3^n~~
\begin{cases}
81=3\cdot 3\cdot 3\cdot 3\\
\qquad 3^4
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3 years ago

Solve for r. /5 = -9

LekaFEV [45]

Answer:

R / 5 = -9

is that what u want if not i'll change it. :D

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4 years ago

Solve y = 12x + n for n need help please

alexgriva [62]

For this, just subtract both sides by 12x and <u>your answer will be $y-12x=n$ </u>