Question

I am a student How will you use a scale to measure.

A line, where zero-mark is invisible?​

Answer 1

If the 0 mark is invisible, you can start measuring from any mark and subtract the result you got by the same number. So-

If you start measuring from n and get the observation as x, the correct observation would be x - n.

For example - You start measuring from 2 and get the observation as 7.

Then the correct observation would be x - n, which in this case is 7 -2 which 5.

Mark my answer as the brainliest. This is my own answer and I kept in a lot of effort and time to fact-check it. It is undoubtedly correct.