Felipe ordered a set of blue and yellow pins. He received 9 blue pins and 6 yellow pins. What percentage of the pins were blue?

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

the answer is 21%.

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12