24 total marbles
6 are black
so you have a 6/24, reduced to 1/4 probability of picking a black one.
Answer:
12
Step-by-step explanation:
The zeroes (where the line crosses the x-axis, these are also the solutions) and the vertex (the highest or lowest point)
X = 33
X can Be mirrored vertically and then is supplementary to x
Answer:
13
Step-by-step explanation: