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Bingel [31]
3 years ago
14

The length of a rectangle is twice its width.

Mathematics
1 answer:
zimovet [89]3 years ago
3 0

Answer:

idc

Step-by-step explanation:

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The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y
Cerrena [4.2K]

We have been given that the inverse variation y=\frac{3\times 10^8}{x} shows the relationship between wavelength in meters, x, and frequency, y. We are asked to find the wavelength for radio waves with frequency 3\times 10^9.

To find the required wavelength, we substitute y=3\times 10^9 in our given equation and solve for x as:

3\times 10^9=\frac{3\times 10^8}{x}

x=\frac{3\times 10^8}{3\times 10^9}

We can see that both numerator and denominator has 3, so we can cancel it out.

x=\frac{1\times 10^8}{1\times 10^9}

Using quotient rule of exponents \frac{a^m}{a^n}=a^{m-n}, we will get:

x=1\times 10^{8-9}

x=1\times 10^{-1}

Therefore, the wavelength for radio waves would be 1\times 10^{-1} meters and option B is the correct choice.

3 0
3 years ago
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Y= 3x — 5 what is the slope and y-intercept
Alex_Xolod [135]
4x is the answer for this one





8 0
2 years ago
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A diagram represents a 12cm by 4cm area calculate the area
Arisa [49]
48 cm is the area because 12x4 is 48.
7 0
3 years ago
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Sphere B is the image of sphere A after dilation by a scale factor of 44. If the surface area of sphere B is 432 km^2, find the
Sergeeva-Olga [200]
<h2>Answer:</h2>

27 km²

<h2>Step-by-step explanation:</h2>

SA=4\pi Jr^2

  4\pi r^2_B=432

      r^2_B=\frac{108}{\pi}

      r_B=\frac{6\sqrt3}{\sqrt{50}}

r_A=\frac{r_B}{4}=\frac{3\sqrt3}{2\sqrt\pi}

S_0SA=4\pi Y\begin{matrix}2\\A\\\end{matrix}

         =4\pi\bullet\frac{27}{4\pi}

         =27\ km

   Y_B:Y_A=4=1

  SA_B:SA_A=16:1

                 432\div 16=27\ km^2

                          simple\ relation.

<em>I hope this helps you</em>

<em>:)</em>

7 0
2 years ago
Help pls plssss I need help
Sophie [7]

Answer:

16

Step-by-step explanation:

5+5=10

3.5+2.5=6

10+6=16

Can I have brainiest?

6 0
2 years ago
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