Answer:
see explanation
Step-by-step explanation:
The equation of a circle in general form is
x² + y² + 2gx + 2fy + c = 0
with centre = (- g, - f) and radius = 
Given
2x² + 2y² + 6x - 8y + 12 = 0 ← divide through by 2
x² + y² + 3x - 4y + 6 = 0 ← in general form
Compare like terms
2g = 3 ⇒ g = 
2f = - 4 ⇒ f = - 2 and c = 6, thus
centre = ( - , 2 ) and
radius = 
= 
= 
= 
Answer:
x = 6
Step-by-step explanation:
4x + 5 = 6x - 7 subtract 4x from both sides
5 = 2x - 7 now add 7 to both sides
12 = 2x finally divide both sides by 2
x = 6
Answer:
9 months
Step-by-step explanation:
Becase in 8 months he can pay 3200 but another month also need to pay ramining money
Yoooo the answer is A, -19. hope this helps, have an amazing day :)
Answer:
(5, -1)
Step-by-step explanation:
x + y = 4
x - y = 6
Add the equations to eliminate y
2x = 10----> x=5
Substitute this value in any equation
5 + y = 4 ----> y = 4-5 ----> y= -1
