The diagram shows the contents of a jar of marbles. you select two marbles at random. one marble is drawn and not replaced. then a second marble is drawn. what is the probability of selecting a red marble and then another red marble? a) 3/64 b) 1)4 c) 1/20 d) 1/30 ( there are 7 blue marbles, 5 green marbles, and 4 red marbles)

Option C is the answer.

Step-by-step explanation:

There are some marbles in a jar

Blue -  7  marbles

Green -  5 marbles

Red  - 4 marbles

Total = 16 marbles

You selected two marbles at random without replacing any.

So the probability that first marble drawn is red =

Now without replacing you selected another marble, So the probability that second marble is red =

=

=  

P = × =

The probability of selecting a red marble and then another red marble is

.

Option C is the answer.

2

step-by-step explanation:

1+1=2

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.