Step-by-step explanation:

24:
1 and 24
6 and 4
2 and 3 2 and 2
So 24 = 1 X 2^3 X 3
28:
1 and 28
7 and 4
2 and 2
So 28 = 1 X 2^2 X 7
Therefore the greatest common factor of 24 and 28 is 2.
Answer:
3
Step-by-step explanation:
because 4 times 3=12
then you add 6 to make 18!
Step-by-step explanation:
Supplementary angles : Add up to 180°.
Therefore (6x - 30)° + (8x + 28)° = 180°,
14x - 2 = 180, 14x = 182, x = 13.
Hence mA = [6(13) - 30]° = 48°.