9514 1404 393
Answer:
5
Step-by-step explanation:
Add the latter two equations and you get ...
(a +b) +(a -b) = (7) +(3)
2a = 10 . . . . . . . . . . . . . . . simplify
a = 5 . . . . . . . divide by 2
Answer:
The chance of him pulling out another blue marble is 6/10 or 3/5
Step-by-step explanation:
There are five significant figures in 12.001
60 because all of the sides are equal