Answer:
13.7 (nearest tenth)
Step-by-step explanation:
13.7142857143 is the full answer
Answer:
x=8 and y=21
Step-by-step explanation:
12x-28=7x+12 (the 2 angles are equivalent)
12x-7x=12+28
5x=40
x=8
9y-77 + 12x-28 =180 (the sum of those 2 angles is a flat angle (180°))
9y-77+12*8-28=180
9y=180+28+77-96
9y=189
y=21
Since we can find a solution for this system of equations we can affirm this is an independent system with solution equal to (x,y) = (3,-1)
* If we graph a dependent system in the slope - intercept form, we can see that the graphs of each one are identical to each (beacuse we are representing the same line).
*An inconsistent system occurs when the equations have the same slope, but different values of intersection with the Y axis.
The answer to you question is 4
