= 2ab + 4a + 6 - 6
= 2ab + 4a
you can factor this to 2a(b + 2)
The absolute value of -81 has the same absolute value as that of 81 because they both have the same distance to 0.
suppose 4:4:7 be 4x, 4x, 7x
or, 15x = 180°
or, X = 180/15
or, X = 12
therefore,
4x = 4x12= 48
4x= 4x12= 48
7x= 7x12= 84
so if you plus all of them you get 180
30-8=22 but I’m not sure about the graph part
