D 
use the formula speed = wavelength x wave frequency
        
                    
             
        
        
        
Answer:
0.04
I rounded to one significant figures.
 
        
             
        
        
        
Area of rect. = 5 x 7 = 35
area of triangle = 1/2(2)(7) = 7
area of figure = 35 + 7 = 42
answer
42 <span>units²</span>
        
                    
             
        
        
        
Answer:
Which day was the weather forecast most accurate? Forecast vs Actual Temperature Day Degrees above (+) or below (–) forecast Monday +4 Tuesday –6 Wednesday +7 Thursday –2 
(i) Monday 
(ii) Tuesday 
(iii) Wednesday 
(iv) Thursday
Ans
(iv)Thursday
Step-by-step explanation:
Forecast for 
Monday +4 Abs |+4| = 4
Tuesday –6 Abs |-6| = 6
Wednesday +7 Abs |+7| = 7
Thursday –2 Abs |-2| = 2
The most accurate is the day closest the temperature forecast is closest to observed temperature, which is 
Thursday (-2)
 
        
                    
             
        
        
        
Answer:
12:15 (simplified: 4:5) 
12/15 (simplified: 4/5) 
12 to 15 (simplified: 4 to 5)
Hope this helped!