Consider a bag with marbles, 3 blue marbles, 4 red marbles, and 8 green marbles. Two marbles are drawn in sequence and are taken without replacement. What is the probability of taking a red marble and then a green marble?

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

yes. we do proportions in probabilities.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

addition

step-by-step explanation: