Answer:
14
Step-by-step explanation:
Shown in picture above.
Answer:
3/8
Step-by-step explanation:
1 - 1/4 = 3/4
1/2 of 3/4 = 3/8
D/dx ( cos (4x)) = - sin (4x) · d/dx ( 4x) = - 4 sin (4x)
Answer:
made 25%
Step-by-step explanation:
Answer:
Option D) is correct
That is x=2 , y=-5
Step-by-step explanation:
Given that the 
To find their determinants

=-8+48
=40
Therefore 

=-76+156
=80
Therefore 

=104-304
=-200
Therefore 
To find the values of x and y:

and 
x=2 and y=-5
Option D) is correct
That is x=2 , y=-5