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lorasvet [3.4K]
3 years ago
12

Help me what the answers

Mathematics
1 answer:
Marina86 [1]3 years ago
3 0
If it is perimeter do this L+W×2
If it's area do this L×W
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An FM radio station broadcasts at 84 megahertz (MHz). What is the energy of each photon in Joule? Use h = 6.6 * 10 ^ (- 34) * j
iragen [17]

Answer:

E=5.544*10^{-26} J

Step-by-step explanation:

The equation for photon energy is given by:

E=hf

Where:

h=Planck\hspace{3}constant=6.6*10^{-34} \\f=Frequency\hspace{3}of\hspace{3}the\hspace{3}wave=84000000Hz

This equation telling us that the higher the frequency of the photon, the greater its energy. And the longer the photon wavelength, the lower its energy.

So, replacing the data provided in the previous equation:

E=(6.6*10^{-34} )*(84000000)=5.544*10^{-26} J

7 0
3 years ago
Write an equation for the line, given that m= 0 and the y - intercept (0, -2)
stich3 [128]

Remember that the slope intercept formula is:

y = mx + b

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b is the y-intercept

so...

m = 0

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3 0
3 years ago
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Write an equation that passes through a pair of points
Phoenix [80]

Answer:

C. y = -x + 2

Step-by-step explanation:

First, find the slope, m, of the line that passes through the two given points.

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Next, determine the y-intercept, b.

The y-intercept is where the line intercepts the y-axis. The line intercepts the y-axis at y = 2. Therefore, b = 2.

Now, to get an equation of the line, substitute m = -1, and b = 2 in y = mx + b.

✅The equation would be:

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3 0
3 years ago
I don't know how to do math lol​
Nimfa-mama [501]

9514 1404 393

Answer:

  (d)  9

Step-by-step explanation:

The relation you're supposed to apply here is ...

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The exterior angle is 17x+7, and it is equal to the sum of the two marked angles inside the triangle.

  17x +7 = 13x +3 +40

  4x = 36 . . . . . . . . . . . . . subtract 13x+7 from both sides

  x = 9 . . . . . . . . . divide both sides by 4

3 0
2 years ago
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Write an<br> explicit formula for an, then<br> th<br> term of the sequence 75, 15, 3, ..
gulaghasi [49]

Answer:

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