2 years ago

A length is measured at 21 cm correct to two significant figures, what is the lower bound of the length and upper bound?

Mathematics

1 answer:

Andreyy892 years ago

7 0

Answer:

20.5 and 21.5

Step-by-step explanation:

It says 2 significant figures so the least it can possibly be is 0.5 less and the most it can be is 0.5 more as if it was, lets say 20.4 it would round down to 20 not 21.

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Answer:

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Step-by-step explanation:

Given : $\dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b$

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Solution,

Solving LHS of the given equation,

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