Answer:
12 purple marbles and 8 yellow marbles
Step-by-step explanation:
If you double 8 and subtract 4 you get 12 which can be added with the 8 to get 20.
Answer:
-24
Step-by-step explanation:
Answer:
x=-4
Step-by-step explanation:
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
3n+10
The perimeter of the triangle, rounded to the nearest tenth, is 8.5 units.