Helllp please

Step-by-step explanation:

Like terms have the same variables and powers.

1). 6b and =

   5x² and x²

2). 12a² and 4a²

    4x³ and 3.5x³

    b and

3). 8x

4). 5a² + 16

5). There are no like terms there.

6). 6b + 5n + 6b + 5n = 12b + 10n

your answer is a

step-by-step explanation:

4*4*4*4=256

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .