Colin earns $9 an hour working after school at the library. After he recevied his paycheck for the last week, he spent $6 and had $129 left. How many hours did Colin work at the library last week?

Collin worked 18 hours.

Step-by-step explanation: Find the sum of what he spent and had left.  129 + 6 = 135.  His paycheck was for $135.00.  Divide the amount of his check by the number of hours he worked. $135.00 divided by 9 = 18.  He is paid 18 dollars per hour.

30

step-by-step explanation:

idk

i hope i

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi