Which represents the solution(s) of the system of equations, y = x^2 - 2x - 15 and y = 8x - 40? determine the solution set
algebraically
(-5, -80)
(5.0)
(5,0) and (-5, -80)
no solutions

I can't English language better but I think this is the correct answer

Step-by-step explanation:

8x-40=x^2-2x-15

0=x^2-10x+25

0=x^2-5x-5x+25

0=x(x-5) -5(x-5)

0=(x-5)(x-5)

::x=5

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

the answer is su.k.my? ? co.kc