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sasho [114]
2 years ago
14

Radio stations use electromagnetic waves for broadcasting. The chart shows different frequencies of waves used by radio stations

. A 2 column by 5 row table. Column 1 is titled Radio Station and contains the following entries: W, X, Y, Z. Column 2 is titled Frequency (Megahertz) and contains the following entries: 88, 95, 90, 99. Which radio station has the wave with the longest wavelength? W X Y Z
Mathematics
2 answers:
Alchen [17]2 years ago
5 0

Answer:

its w or A

Step-by-step explanation:

correct on edge 2021

Neko [114]2 years ago
4 0

Answer:

its d

Step-by-step explanation:

just took the test

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What is the x intercept Y=-6x+8
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4 0
3 years ago
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WILL MAKE BRAINLIEST!!! A Ferris wheel has a diameter of 220 feet and the center of the wheel is 125 feet above the ground. The
daser333 [38]
Since the radius of a circle is half its diameter, the radius of our Ferris wheel is r= \frac{220}{2} =110ft

Next, we are going to convert from revolutions per minute to degrees per second.
We know that t<span>he wheel makes a complete turn every 2 minutes, so it makes a complete turn in 120 seconds. Since there are 360° in a complete turn, we can set up our conversion factor:
</span>\frac{1*360}{120}=3 degrees per second 
<span>
Now, lets find the height:
</span>We know that <span>the passenger is at the lowest point on the wheel when t=0; since the wheel is 125 feet above the ground, at t=0 h=125. To find t at the top, we are going to take advantage of the fact that the wheel will turn 180° from the lowest point to the top and that it turns 3° every second:
</span>t= \frac{180}{3}
t=60
Notice that the height at the top is the diameter of the wheel plus the height above the ground, so h=220+125=345.

To model the situation we are going to use the cosine function, but notice that cos (\alpha) is 1 when \alpha =0 and -1 wen \alpha =180. Since we want the opposite, we are going to use negative cosine.
Notice that we want \alpha =180 when t=60, so we are going to use -cos(3t). Next, we are going to multiply our cosine by the radius of our wheel: -110cos(3t), and last but not least we are going to add the sum of the radius of the wheel plus the height above the ground:
h=110+125-110cos(3t)
h=225-110cos(3t)

Now that we have our height function lets check if everything is working:
<span>the passenger is at the lowest point at t=0; we also know that the lowest point is 125 feet above the ground, so lets evaluate our function at t=0:
</span>h=225-110cos(3t)
h=225-110cos(3*0)
h=125 feet 
So far so good. 
We also know that at t=60, our passenger is 345 feet above the ground, so lets evaluate our function at t=60 and check if coincides:
h=225-110cos(3t)
h=225-110cos(3*60)
h=225-110cos(180)
h=345feet 

We can conclude that cosine function that express the height h (in feet) of a passenger on the wheel as a function of time t (in minutes) ) is: h=225-110cos(3t)
8 0
3 years ago
A container holds 4 gallons of juice how much is this in pints ​
Sladkaya [172]

32 pints is the answer to this question

4 0
3 years ago
Does anyone know how to solve this?
KATRIN_1 [288]

Answer:

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Step-by-step explanation:

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<24,-16> + < 6,-4>

<30,-20>

4 0
2 years ago
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Rina8888 [55]
She done better at the 2nd test because she only got 4 wrong but on the first test she got 6 wrong.
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