NEED HELP PLEASE 25 points

Option B)  - 2 u + w  

Step-by-step explanation:

Given that the vectors u and w in components are :

u = < 5 , - 5 >   and   w = < 4, - 9 >

then the operation ;

- 2 u + w  gives:    

- 2 < 5 , - 5 > +  < 4, - 9 > = < - 10. 10 > + < 4, - 9 > =

= < - 10 + 4 , 10 - 9 > = < -6 , 1 > which are the components of the vector pictured in the image.

area of rectangle a is 2 times that of rectangle b that means 2x+x =   36cm^2

3x = 36cm ^2

x = 36/3

x= 12cm^2

and 2x = 24cm^2

now side of square = are divided by sides = 36/4 = 6cm

that means length of rectangle a and b is 6cm too

now for rectangle a,

l*b = area

= 6*y=24

y=24/6 = 4

therefore dimensions of rectangle a are- length = 6cm, breadth = 4cm

and for rectangle b, length = 6cm and breadth = 6-4 = 2cm.

hope this .

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees