Preston placed 4 white marbles, 6 blue marbles, and 8 yellow marbles in a bag, if he
picks a marble without looking, what is the probability that the marble will NOT be blue?

Step-by-step explanation:

50% because 8+4=12

And 6 is half of 12 so he will have a 50% chance of getting a blue marble or not

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.