Select all the correct answers. The base of a pentagon lies on ray AB as shown. Determine which statements are true
(2x+14)=90
(2x+14)+(7x+13)=180
(7x+13)=132
(2x+14)=48
X=7

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

y -5 = (-1/4)(x + 8)

step-by-step explanation:

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21