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Ilia_Sergeevich [38]
3 years ago
11

Simplify. (3/4√15) (16√5) ​

Mathematics
1 answer:
lana66690 [7]3 years ago
7 0

Answer:

its either 3(1−√5 -16 or

3−3√5−16

Step-by-step explanation:

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What two numbers add to 9 and multiply to -70
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The numbers are -5 and 14.
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There are 240 students going on a field trip. Each school bus can hold 48 students. Complete the equation to show which operatio
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Debra started washing at 8:33 AM and finished at 9:22 AM.How long did it take her? Give your answer in minutes.
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According to the given data we have the following:

Debra started washing at 8:33 AM

finished at 9:22 AM

One easy way to find out the amount of time it took to her washing her clothes would be the following:

Debra started washing at 8:33 AM, so from 8:33 am to 9 o clock 27 minutes passed.

So, if she finished at 9:22 AM, that means that we would have to add to the 27 minutes another 22 minutes, so 27+22=49 minutes.

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It is given that y varies inversely as x^2. If x is decreased by 50%, find the percentage change in y.
vova2212 [387]

Answer:

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Step-by-step explanation:

Given

y\ \alpha\ \frac{1}{x^2}

Required

Find the percentage change in y when x decreased by 50%

First, convert to equation

y\ = \ \frac{k}{x^2}

Where k is the constant of proportionality

When x decreased by 50%

Y = \frac{k}{(x - 0.5x)^2}

Y = \frac{k}{(0.5x)^2}

Y = \frac{k}{0.25x^2}

Expand

Y = \frac{1}{0.25} * \frac{k}{x^2}

Substitute \frac{k}{x^2} for y

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The percentage change is then calculated as:

\%Change = \frac{Y - y}{y} * 100\%

\%Change = \frac{4y - y}{y} * 100\%

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\%Change = 3 * 100\%

\%Change = 300\%

<em>The percentage in y is 300%</em>

7 0
3 years ago
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