The total number of marbles is

.
If we draw a red marble, the chance of that occurring is

.
Now the total number of marbles left is 7. If we then draw a green marble, the chance of that occurring is

.
So the chance of drawing a red, then green, marble is

.
The point where the lines intersect is the point that satisfies both equations.
It is (1, 5), selection C.
Answer: 3/4
Step-by-step explanation: Dividing by a fraction is the same as multiplying by its reciprocal. In other words, we can change the divison sign to multiplication and flip the second fraction.
So here, 3/8 divided by 1/2 can be rewritten as 3/8 × 2/1.
Now we are simply multiplying fractions so we multiply across the numerators and we multiply across the denominators.
So we have 3 × 2 which is 6 and 8 × 1 which is 8. Since 6/8 is not in lowest terms, we divide the numerator and the denominator by the greatest common factor of 6 and 8 which is 2 and we get the equivalent fraction 3/4.
Therefore, 3/8 divided by 1/2 is 3/4.