barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead, and so on. Write the numbers for the first eight beads that are white. What is a rule for the pattern?

Question

Mathematics

Marlie

19 May, 09:09

barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead, and so on. Write the numbers for the first eight beads that are white. What is a rule for the pattern?

+4

Answers (2)

Know the Answer?

Toby Davila · Answer 1

Toby Davila 19 May, 12:21

0

1,5,9,13,17,21,25,29

rule = + 4

Alonso Mills · Answer 2

The first eight beads that are white are: 1,5,9,13,17,21,25,29

The rule for the pattern is. if n is a number of bead that is white, the next number of bead that is white is n+4

Step-by-step explanation:

The first beads are:

bead color

1 w

2 b

3 b

4 b

5 w

6 b

7 b

8 b

where w refers to white and b to blue

If n is a number of bead that is white, the next number of bead that is white is n+4. We know that the first bead is white (n = 1), then the bead n = 1 + 4 = 5 is also white. Therefore, the bead n = 5 + 4 = 9 is white and so on. The first eight beads that are white are: 1,5,9,13,17,21,25,29.