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2 years ago

What expression is equivalent to 2^6 times 2^-4/ 2^7

Mathematics

1 answer:

777dan777 [17]2 years ago

8 0

I believe it is 4^-5
2^6 (2^-4/ 2^7)
=2^6(2^-4-+7)
=2^6(2^-11)
=4^6-11
=4^-5

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Urgent help please

rosijanka [135]

Let's assume the frequency of sound be f and wave length is w.

Given that, the frequency of sound varies inversely as the wavelength.

So, we can set up an equation as following:

f*w = k Where k= constant of variation.

Other information is, the frequency of a musical note is 276 cycles per second when the wavelength is 1.2m.

So, next step is to plug in f = 276 and w = 1.2 in the above equation to get the value of k.

276 * 1.2 = k

So, k = 331.2

Next step is to plug in k = 331.2 in the above equation. So,

f * w = 331.2

Now we need to find the wave length : w when frequency : f = 600.

Therefore,

600 * w = 331.2

$w = \frac{331.2}{600}$

So, w = 0.552

Hence, the wave length is 0.552 m.

Hope this helps you!.

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2 years ago

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Solnce55 [7]

Answer:

its the last one I think.

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2 years ago

The desert temperature, H, oscillates daily between 30ºF at 4am and 70ºF at 4pm. Write a possible formula for H in terms of t, m

densk [106]

The find step is to find C which is the vertical shift. This is the average between the maximum and minimum. So its 30+70=100/2= 50. the amplitude (A) take the average of the difference between max. temp. and min. value So 70-30= 40/2= 20, but it becomes -20 because the graph is shifted up 50 degrees and decreases to 30 at 4a.m. Then the period is 2pi/B which is 2pi/24, which equals pi/12. A=-20 B= pi/12 C=50

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Find h(k+6) if h(x)=15x+6

goblinko [34]

Answer:

h(k+6) if h(x)=15x+6

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soldi70 [24.7K]

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2 years ago