What is the recursive formula of the geometric sequence? 1∕2, 3∕4, 9∕8, 27∕16, ... Question 12 options: A) an = (2) ⋅ (1∕2)n – 1 for n ≥ 1 B) an = (1∕2) ⋅ (1∕2)n – 1 for n ≥ 1 C) a1 = 1∕2; an = an – 1 ⋅ (3∕2) for n ≥ 2 D) a1 = 1∕2; an = an – 1 ⋅ (2) for n ≥ 2

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Iam at home. /: i am playing video games. translate the following statement into symbolic form.