Answer:a =7
Step-by-step explanation:
Answer:
2/7* a/a+2=2/9
a/a+2=2/9*7/2
a/a+2= 7/9
a=7/9(a+2)
a= 7/(9a+18)
49min
• A is 18 in²
• b is 9 in
Solution: The number of ways we can arrange 3 blue marbles if a set of 5 marbles is selected is:
Therefore, there are 10 ways we could arrange 3 blue marbles.