The circular mirror below has a frame with a circumference of 28.26 inches. 9 inches
Which expression best represents the value of π ?
A: 9 / 28.26
B: 28.26/ 4.5
C: 4.5/28.26
D:28.26/9

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

wait nvm i know the correct answer now its 100%   81 square feet

~batmans wife dun dun

i belive the biggest ratio would be 18: correct me if im wrong