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makvit [3.9K]
2 years ago
6

Help? ik im dumb but i need good grades and i can risk getting anything wrong

Mathematics
1 answer:
Nookie1986 [14]2 years ago
3 0
85.104 is the answer
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You buy Apple stock for $120 per share over a period of time the stock value increased at a weekly rate of 5% you sell the stock
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Answer:

8.31  weeks

Step-by-step explanation:

Given that the cost of one share of Apple stock, C=$120

Rate is the increment of the stock value, R= 5%/week=0.05 / week.

Assuming that after t week, the stock has been sold for $180.

Since the stock value increased at 5% every week, so, the interest is compounded weekly, so

S=C\left(1+R\right)^t \\\\ \Rightarrow 180 = 120\left(1+0.05\right)^t \\\\  \Rightarrow 180 = 120\left(1.05 )^t \\\\

\Rightarrow \frac{180}{120}=1.05^t \\\\\Rightarrow 1.5=1.05^t

\Rightarrow \ln(1.5)=t \ln(1.05) [taking log both sides]

\Rightarrow t=\frac {\ln(1.5)}{\ln(1.05)}=8.31 weeks

Hence, after 8.31  weeks the stock has been sold for $180.

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3 years ago
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What’s the best way to revise for maths? can never remember how to do anything.
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