Answer:
.8
Step-by-step explanation:
5 red marbles, 2 Green marbles and 3 black marbles = 10 marbles
P (red or black) = number of red or black/ total
= (5+3)/10
=8/10
decimal form = .8
Is it subtract 228? if so then 3-5 equals -2. -2-8 equals -10. -10-228 equals -238
Why don’t you round the last answer
