Hannah travels 9 times as many mins as roaul does, together they traveled 70 minutes. how many minutes does hannah travel

63

Step-by-step explanation:

9r + r = 70

9r = 70 - r

r = 7 because 9 times 7 is 63, which is the same as 70 - 7.

Since Hannah traveled 9 times as much as how many minutes Roaul traveled (aka "r" in the equation), Hannah traveled 63 miles.

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.