8.4 because 6 would round up to 10 and 10+30 =40 for 8.40 or just 8.4
Answer:
its b ez
Step-by-step explanation:
Answer:
There are 19 big marbles
Step-by-step explanation:
10a + 3b = 209
a = 3b
3b = 3b
10a + a = 209
11a = 209
a = 209/11
a = 19
Answer:africa
Step-by-step explanation:
science