Is the ordered pair (1, 2) a solution to this system
of equations?
y=-2x +4
7x - 2y = 3

answer need answer i will giveest, sos !

Yes

Step-by-step explanation:

To determine is an ordered pair is a solution to the system of equations, substitute its coordinates into each of the equations.

An ordered pair is written in the form (x, y), so x=1 and y=2.

y = -2x +4

2 = -2(1) + 4      <=simplify this by multiplying (-2)(1)

2 = -2 + 4        <= add

2 = 2         <= same answers

LS = RS

7x - 2y = 3

7(1) - 2(2) = 3     <=simplify this but multiplying 7(1) and 2(2)

7 - 4 = 3           <= subtract

3 = 3          <= same answers

LS = RS

Since (1, 2) satisfies both of the equations, it is a soltuion to the system of equations.

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