Option A

<em><u>Solution:</u></em>
Given expression is:

To evaluate the expression, let us make the exponent of 10 same

[ Here, decimal point is moved three times left, so add 3 ]
Therefore,



Thus Option A is correct
Answer:
2×6729=13458
Step-by-step explanation:
Answer:
Calm down, it's ok! the greatest value ( x = 5 )
Step-by-step explanation:
It won't be A as it is negative, so just choose the largest value and it is 5 and put it into the equation to check just in case.
Answer:
1200cm
Step-by-step explanation:
Given data
We know that 1meter is equivalent to 100cm
i,.e 1*100
so, if height is 1.2meters
Height in centimeters is 1.2*100
Hence height in centimeters is 1200cm
Not enough information to help with.