Answer:
0.4%.
Step-by-step explanation:
Given that,
The length of a bolt is 4.75 inches and a machinist makes a bolt that is 4.769 inches long.
We need to find the percent error of the bolt’s length. The percentage error in the any value is given by :
[tex]\%=\dfrac{|\text{original value-calculated value}|}{\text{original value}}\times 100\\\\=\dfrac{4.75 -4.769 }{4.75}\times 100\\\\=0.4\%[/tex]
So, the percentage error of the bolt's length is 0.4%.