N=15. Equation: You need to isolate N. Multiply both sides by 300 to get 300/20 = N. You can simplify it to 15.
sorry I needed the points!
Hello, Marymack!
We know that in a geometric sequence defined by
and
, the sum can be calculated the following way:
Marbles =12
There are 2 red marbles
2/12 or 1/6 simplified