Answer:
Therefore, the decimal number 5540 written in scientific notation is 5.54 × 103 and it has 3 significant figures.
Step-by-step explanation:
PLS BRAINLEST PLS PLS PLS
Answer: Option (D) Add the exponents and keep the same base. Then find the reciprocal and change the sign of the exponent.
Explanation:
Given expression:

<em>Step-1: </em>Add the exponents and keep the same base by using
property.

Step-2: The reciprocal of
is
, which is 
Step-3: The exponent of
is +1; therefore, change the sign of exponent. The end expression will now become:

Hence, the correct option is (D) Add the exponents and keep the same base. Then find the reciprocal and change the sign of the exponent.
They could help people understand AI but I mean, the things are made of 'unobtainium' so... I doubt anyone would be able to figure out their hardwiring in the first place.