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Harrizon [31]
3 years ago
5

Help Me on these questions!!!!!!!

Mathematics
2 answers:
Mama L [17]3 years ago
7 0
11 lunches and 10 desserts Monday at Ava's cafe and 10lunches and10 desserts Friday at Bo's cafe
iren [92.7K]3 years ago
6 0
On Monday, 11 lunches and 10 desserts are ordered. On Friday, 10 lunches and 10 desserts are ordered.
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A sound wave is traveling at 6,420m/s and has a frequency of 600Hz. What is the wavelength?
GaryK [48]

Answer:

10.7 m

Step-by-step explanation:

Given that,

The speed of a sound wave, v = 6,420 m/s

The frequency of the wave, f = 600 Hz

We need to find the wavelength of the wave. We can find it using the below relation as follows :

v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{6420}{600}\\\\\lambda=10.7\ m

So, the wavelength of the sound wave is equal to 10.7 m.

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3 years ago
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In general, a solution of a system in two variables is an ordered pair that makes BOTH equations true. In other words, it is where the two graphs intersect, what they have in common. So if an ordered pair is a solution to one equation, but not the other, then it is NOT a solution to the system
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RideAnS [48]
1, Might not be precise 
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3, If there are many solutions that will be really hard to plot sometimes. 

This is just from the top of my head. 
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