What number could be added to 0.40ml for the level of precision to be 0.01 ml

The number -0.39 ml could be added to 0.40 ml for the level of precision to be 0.01ml.

Step-by-step explanation:

Let x be the number could be added to 0.40ml .

According to question

If the number x added to 0.40 ml then we get precise  level 0.01 ml .

therefore, we make an equation by using of  addition property

      x+0.40=0.01

    x=0.01-0.40

Because when we put a number from left hand side of equal to and put  on right hand side of equal to then the sign of the number changes .

therefore, sign of 0.40 changes in to negative .

Therefore, by solving equation

       we  get x= -0.39

a 360 degree rotation

step-by-step explanation: