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larisa86 [58]
3 years ago
12

Robert is going to invest $640 and leave it in an account for 20 years. Assuming the interest is compounded quarterly, what inte

rest rate, to the nearest hundredth of a percent, would be required in order for Robert to end up with $1,280?
Mathematics
1 answer:
ollegr [7]3 years ago
5 0

Answer:

Interest rate ≈ 3.48%

Step-by-step explanation:

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15 hours.

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Which of the following points is in the solution set of y &lt; x2 - 2x - 8?<br>(-2, -1)(0, -2)(4, 0)
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Debbie buys a tree for the holidays. She would like to determine the amount of space it will take up in her living room. The tre
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Answer:

Volume of Cone =

=  \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3

Thus, Volume = 16.75 cubic feet

Step-by-step explanation:

Volume of a cone is given by the formula  

V=\frac{1}{3}\pi r^2 h

Where r is the radius and

h is the height

Given radius r = 2 and

height is 2 times that.

So height is 2*2 = 4

Plugging these into the formula we get:

Volume of Cone =

=  \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3

Thus, Volume = 16.75 cubic feet

8 0
3 years ago
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