x+y=12
x-y=4
Then you solve:
x+y=12
-y -y
x=12-y
x-y=4
+y +y
x=4+y
4+y=12-y
+y +y
4+2y=12
-4 -4
2y=8
divide both sides by 2 to isolate y
y=4
Plug it into one of the equations
x+4=12
-4 -4
x=8
Converse of corresponding angles theorem
Median: 89
mode: no mode
hope i helped
<span>the 6 exterior measures = a, b, c, d, e, f.
Their sum is 360 degrees.
For each one, the interior angle = 180 - exterior.
So for your problem,
a = 55, b = 60, c = 69, d = 57,
e = (missing one)
f = (remaining one, not given).
Take 55 + 60 + 69 + 57 + e, subtract from 360 to get f.
f = 119 - e.
Then the interior angles are:
125, 120, 111, 123, (180 - e), and (180 - 119 + e) = (61 + e).</span>
"The limit does not exist!" - Cady Haren (Mean girls)
