Boxes of bad vampire novels arrive, on average, every 8 minutes at an industrial-strength shredder. The standard process to load, shred, and unload each shredded boxload takes 6.5 minutes. What is the average time from when a box of novels arrives until shredding is complete (in hours)?

0.578 hours

Step-by-step explanation:

If boxes of books arrive at a rate of 1 per 8 minutes, the number of boxes per hour is:

If the service rate is 1 box per 6.5 minutes, the number of boxes per hour is:

The average time from when a box of novels arrives until shredding is complete is:

The average time in the system is 0.578 hours.

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.