A bag contains six red marbles, two green, and four blue marbles. You randomly pick a marble and then pick a second marble, returning the marbles to the bag each time. What is the probability of pulling a blue marble first and then a red marble second? a. 1/12
b. 1/18
c. 1/9
d. 1/6

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )

df =

both have same length

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

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