We will be using the formula: Speed = Wavelength * Frequency
1. <u>Given:</u>  Wavelength = 5 m     and     Frequency = 2 Hz
Speed of the wave = Wavelength * Frequency
Speed of the wave = 5 * 2
Speed of the wave = 10 m/s 
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2. <u>Given:</u> Speed of the wave = 100 m/s   and    Frequency= 1000 Hz
Wavelength = Speed / Frequency
Wavelength = 100 / 1000
Wavelength = 0.1 m
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3. <u>Given:</u> Speed of the Wave = 25 m/s           Wavelength = 5 m
Frequency = Speed / Wavelength
Frequency = 25 / 5
Frequency = 5 Hz
 
        
             
        
        
        
The answer is c. 28.26 cm^2
        
                    
             
        
        
        
5/6 cross multiply by 3/4 = 5/8
        
             
        
        
        
Answer is 2+2x+4y
Have a great day/night
        
                    
             
        
        
        
Answer:
12.4
Step-by-step explanation: