I'm not sure if an equation is needed. Since you put the marble back into the bag the odds are still 50/50 that you will draw either color.
If you would have left it out then it would be dependent because the ratio would change.
Answer:
24, 40
Step-by-step explanation:
The area of a triangle is given by the formula

where
b is the length of the base
h is the length of the height
For the 1st triangle here, we have:
b = 6 is the base
h = 8 is the height
So, the area of the triangle is

For the 2nd triangle here, we have:
b = 8 is the base
h = 10 is the height
So, the area of the triangle is

Answer:
(b)
student can choose none or some
I only know number 9
9. 9x+38