What are the x-intercepts of the function f(x) = -2x2 – 3x + 20?
(-4,0) and (5/2,0)
(-5/2,0) and (4,0)
(-5,0) and (2,0)
(-2,0) and (5,0)

29 mil

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

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation: