If using the method of completing the square to solve the quadratic equation x^2-11x-38=0x 2 −11x−38=0, which number would have to be added to "complete the square"?

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

umumumumum

im not sure

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0