Question

I have a couple questions can someone help me

Answer 1

a cup on the teachers desk contains 12 pens there are 3 pens with blue ink and 9 pens with black ink one student at a time selects a pen at random to sign the attendance sheet and then puts the pen back in the cup
what is the probability that the first three students all randomly select a pen with blue ink?

Answer 2

1/4
1/27
1/64
1/220

Answer 3

@primeralph @Zale101 @mathstudent55 @mathaddict4471

Answer 4

@amistre64

Answer 5

do you know how to do it?

Answer 6

(3/12)^3

Answer 7

so 3/12 x 3/12

Answer 8

In 3 places.

Answer 9

what do you mean

Answer 10

(3/12)^3 is not (3/12)*(3/12).

Answer 11

oh oops 3/12 x 3/12 x 3/12 because its cubed

Answer 12

Yeah.

Answer 13

1/64?

Answer 14

I have another question if you can help me

Answer 15

Maybe.

Answer 16

The first four terms of a sequence are shown
1/8, 1, 8, 64
Which expression can be used to find the nth term in the sequence

Answer 17

You tell me what you think.

Answer 18

1/8 (8) ^n - 1
8(1/8)^n-1
1/8(8)^n
8(1/8)^n

Answer 19

those are the possible choices I was typing them

Answer 20

Let's see you try it tout.

Answer 21

well im trying to figure out what the set is

Answer 22

*out.
Take your time to figure it out. You'd have to try for me to help.

Answer 23

um well im confused by the n - 1 how does tht work

Answer 24

8 x 8 is 64 1 x 8 ix 8 so I mean tht links together

Answer 25

and 1/8 x 8 = 1

Answer 26

so that all links up and it looks like its times 8

Answer 27

n-1 means subtract 1 from n.

Answer 28

I don't really know what they want because I know its multipled by 8 now but that isn't an answer soooo

Answer 29

You were on the right track.

Answer 30

ok?

Answer 31

I don't know what to do next