Cate and elena were playing a card game. the stack of cards in the middle had 24 cards in it to begin with. cate added 8 cards to the stack. elena then took 12 from the stack. finally, cate took 9 cards from the stack. how many cards were left in the stack.

Starting out with 24.

Cate added 8.

24 + 8 = 32

Elena took 12.

32 - 12 = 20

Cate took 9.

20 - 9 = 11

11 are left.

1 is c

2 is a

3 is a

step-by-step explanation:

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees