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mr_godi [17]
3 years ago
9

A museum has a 1/2 ounce piece of a precious metal. When the museum first received the piece, it had a value of $90. Its value h

as since decreased by 20%. What is the current value per ounce of the piece of metal?
Mathematics
1 answer:
Alex777 [14]3 years ago
5 0
The current value of the precious metal is $144/oz

-First, you'd want to determine the original value per ounce since that's what the final unit being asked for is.

- Since the original value of the half ounce piece is given, this first step is fairly simple. You just double ninety.

- We now know that the metal was worth $180/oz when the museum first received it.

- We need to determine the current price of the metal now that is has had a twenty percent loss of value.

- My favorite way to factor in 20% is simply to divide by five since it's a lot more simple than finding the ratio of x$/1%

- $180/5=$36

- Thirty-six dollars is the price drop over the course of the museum possessing the precious metal.

- You now take $180-$36=$144
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Find the geometric mean of 2 Square root of 6 and 3 square root of 6
Olenka [21]

Option B:

Geometric mean of 2 \sqrt{6} \  \text { and } \  3 \sqrt{6} is 6.

Solution:

Given data:

2 \sqrt{6} \  \text { and } \  3 \sqrt{6}

<em>Geometric Mean is a average where we multiply the numbers together and then take a square root (for two numbers), cube root (for three numbers) etc.</em>

Let us multiply 2 \sqrt{6} \  \text { and } \  3 \sqrt{6}.

2 \sqrt{6} \times  3 \sqrt{6}=2\times 3\times \sqrt{6} \times \sqrt{6}

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Now, taking square root for the product.

\sqrt{2 \sqrt{6} \times  3 \sqrt{6}}=\sqrt{36}

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