Answer:
3n+10
Step-by-step explanation:
6(n+4)-4
PEMDAS
start with parenthesizes
6 x n = 6n
6 x 4 = 24
so we have
6n+24-4
subtract the 4
6n+20
simplify by dividing by common factor
6n/2 =3n
20/2 =10
B
90°
i went on a whim and guessed it was a right angle, sorry I can't provide reasoning! but it is for sure 90°
14x + 5 + 90 = 165
14x + 95 = 165
-95 -95
14x = 70
/14 /14
x = 5
14(5) + 5 +90 = 165
70 + 95 = 165
165 = 165
