Answer:
Step-by-step explanation:
hello : 
cos66° = x/14
x= 14× cos66°
x= 14× 0.41
x=5.74
 
        
             
        
        
        
Answer:
Notebook is $4
Thumb drive is $23
Step-by-step explanation:
Let notebooks be x and thumb drives be y
6x+7y=$185
14x+12y=$332
These two are simultaneous equation. Multiplying the first equation by 7 and second by 3 we obtain
42x+49y=$1295
42x+36y=$996
Subtracting the third equation from the fourth
996-1295=-$299
(36-49)y=-23y
-23y=-$299
y=$299/13=$23
To get the value of x, we substitute the value of y into the first equation
6x+(7*23)=$185
6x=$185-$161
6x=$24
x=$4
Therefore, price of notebook is $4, price of thumb drive is $23
 
        
             
        
        
        
Answer: It is because if ∠N and ∠K are congruent and are same in size and shape.
 
        
                    
             
        
        
        
Answer:
declaration = - 0.55 m/s² 
Step-by-step explanation:
The declaration is a negative accelaration.
Therefore:

a      = ?
v      =	70 of 15% = 10.5 km/h to m/s = 2.9 m/s
u	=	70 km/h to m/s = 19.4 m/s
t	=	30 seconds

a = - 0.55 m/s²