Answer:
10 metal and 20 plastic
Step-by-step explanation:
10 x 25 is 250, 20 x 10 is 200 and 250 + 200 is 450
hi, it's b because a+b is 180°
6x+18y
is this answer
5(m+1)-1
5m+5-1
5m-4
your answer will be option C).0
hope it helps you