Carl's dog, buddy, is on an 8 foot leash that is attached to the center of a 20-foot fence. How much space does buddy have to roam around? Round to the nearest tenth.

Distance =  25.12 foot

Step-by-step explanation

The roaming distance = 0.5 x 2πR

R = 8 feet

Distance = 0.5 x 2 x 3.14 x 8 = 25.12 foot

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -