Step-by-step explanation:
a) You need a high degree of precision and accuracy to machine the gears because of what the device is meant to do: time-keeping.
b) You only need a fair degree of accuracy here for matching purposes.
c) Since you're measuring with a tape measure, you only need a fair amount of accuracy.
Answer:
A.Pi
Step-by-step explanation:
Answer:

Step-by-step explanation:
Using the division rule when dealing with exponents

meaning that when we divide exponents that have the same base but different powers we can subtract the power of the bottom exponent from the top exponet.
so using that we are going to do 2, 4 and 9



Combine all the terms and we get
