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4 years ago

99 POINTS

Mathematics

2 answers:

True [87]4 years ago

6 0

Answer:

.378787878 m =Wavelength

Step-by-step explanation:

The formula to find the speed of a wave is found by

Speed = Wavelength x Frequency where the frequency is in HZ and the wavelength is in meters

250 = Wavelength*660

Divide each side by 660

250/660 = Wavelength*660/660

.378787878 m =Wavelength

san4es73 [151]4 years ago

4 0

Here is your answer

We know that

Velocity = Frequency × Wavelength (all in SI units)

So,

Wavelength = Velocity/Frequency

= 250/660

= $0.37878787... m$

HOPE IT IS USEFUL

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Which planet in the chart is most likely Earth? Yeah <br> Does somone no the answer

pishuonlain [190]

Answer:

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3 years ago

Use a proof by contradiction to show that the square root of 3 is national You may use the following fact: For any integer kirke

Ierofanga [76]

Answer:

1. Let us proof that √3 is an irrational number, using <em>reductio ad absurdum</em>. Assume that $\sqrt{3}=\frac{m}{n}$ where $m$ and $n$ are non negative integers, and the fraction $\frac{m}{n}$ is irreducible, i.e., the numbers $m$ and $n$ have no common factors.

Now, squaring the equality at the beginning we get that

$3=\frac{m^2}{n^2}$ (1)

which is equivalent to $3n^2=m^2$ . From this we can deduce that 3 divides the number $m^2$ , and necessarily 3 must divide $m$ . Thus, $m=3p$ , where $p$ is a non negative integer.

Substituting $m=3p$ into (1), we get

$3= \frac{9p^2}{n^2}$

which is equivalent to

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Thus, 3 divides $n^2$ and necessarily 3 must divide $n$ . Hence, $n=3q$ where $q$ is a non negative integer.

Notice that

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The above equality means that the fraction $\frac{m}{n}$ is reducible, what contradicts our initial assumption. So, $\sqrt{3}$ is irrational.

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$k=\frac{k}{1}$ .

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$k\cdot r = \frac{k}{1}\frac{m}{n} = \frac{mk}{n}$ .

Notice that the product $mk$ is an integer. Thus, the fraction $\frac{mk}{n}$ is a rational number. Therefore, $k\cdot r\in\mathbb{Q}$ .

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4 years ago

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Maurinko [17]

$\boxed{k=7.99}$

<h2>Explanation:</h2>

In this exercise, we have the following point:

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<h2>Learn more:</h2>

Direct and indirect proportionality: brainly.com/question/10945121

#LearnWithBrainly

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Answer:

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4 years ago

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Fiesta28 [93]

keeping in mind that standard form for a linear equation means

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3 years ago