Step-by-step explanation:
so, we just enter the given data into the given formula. and then calculate. it does not get easier than that.
d = 8km/h × 2h = 16km
Serena ran 16km in these 2 hours. 
 
        
             
        
        
        
First one:
cos(A)=AC/AB=3/4.24
cos(B)=BC/AB=3/4.24
Cos(A)/cos(B)=AC/AB / (BC/AB) = AC/AB * AB/BC = AC/BC=3/3=1
Second one:
To solve this problem, we have to ASSUME AFE is a straight line, i.e. angle EFB is 90 degrees. (this is not explicitly given).
If that's the case, AE is a transversal of parallel lines AB and DE.
And Angle A is congruent to angle E (alternate interior angles).
Therefore sin(A)=sin(E)=0.5
 
        
             
        
        
        
Answer:
Because 
Step-by-step explanation:
4 4/10 = 4.4  and  32/10 = 3.2
4.4 is bigger than 3.2 so that's why 4 4/10 is bigger.
 
        
             
        
        
        
The rational numbers will best define- The height of an airplane as it descends to an airport runway.
This is because it includes fractions as well.
Irrational, integers, whole numbers cannot be used in this situation.
        
             
        
        
        
Answer:
Step-by-step explanation:
2x² divide all the three terms so G.C.F.=2x²