Write 18.766 correct to
(a)
2 significant fugures

Step-by-step explanation:

18.766

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.

But in this case we don't have a zero, they are non zero case

Then,

18.766 to 2s.f

The two significant number is 1 and 8

Therefore the to 2s.f=18

But the number after the 8 which is 7 is greater than 4, and when this happens we will add one to the preceding number which is it 8 and this becomes 9.

So, to two significant figure, the answer is 19.

2s.f=19