Solve the system using subtraction. 7x + 2y = 13 –x + 2y = –11 what is the solution of the system?

Step-by-step explanation:

Subtract both equations:

Distribute the negative signs and then you need to add the like terms:

 BY the division prperty of equality, divide both sides of the equation by 8:

Substitute the value of x obtained into any of the original equations to find the value of y. Then you get:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh