If angle 2 congruent to angle 4 and angle 5 congruent to angle 7, which describes all the lines that must be parallel? a) Only lines r and s must be parallel.

b) Only lines t and u must be parallel.

c)Lines r and s and lines tand u must be parallel.

d) Neither lines rands nor lines t and u must be parallel.

no idea

step-by-step explanation:

do you have a picture of the table

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.