I believe it is 8x.
Use the formula A=1/2(b*h)
A=1/2(4x(5x-1))
A=1/2(20x-4x)
A=1/2(16x)
A=8x
        
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
a
The tangent and the radius at the point of contact form a right angle
Using Pythagoras' identity on the right triangle formed.
Let x be the distance from the centre to P, then
x² = 4² + 10² = 16 + 100 = 116 ( take the square root of both sides )
x =  ≈ 10.77 cm (to 2 dec. places )
 ≈ 10.77 cm (to 2 dec. places )
b
let the required angle be Θ, then
Using the sine or cosine ratio in the right triangle.
cosΘ =  =
 = 
Θ =  (
 (  ) ≈ 21.8°
 ) ≈ 21.8°
 
        
             
        
        
        
Answer:
x<3
Step-by-step explanation:
add 5 to 16. then divide 7 from 21. the sign flips with inequalities involving multiplication and/or division
 
        
             
        
        
        
This will be 2400 cause there is nothing in the ones place
        
             
        
        
        
Answer:
tha
Step-by-step explanation: