A jar contains 8 red marbles, numbered 1 to 8, and 12 blue marbles numbered 1 to 12. a) A marble is chosen at random. If you're told the marble is blue, what is the probability that it has the number 2 on it?

b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 11 on it, what is the probability the marble is blue?

you need more information to answer this question

step-by-step explanation:

b. x + 1

step-by-step explanation:

i'am smart

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

~

lol.

it's ok we all do this sometimes.

-aparri