The number that can't be written as an integer is:
1.2*10⁻²
Which expression cannot be written as an integer?
Let's take each of the given numbers, and see if we can rewrite them as integers.
a) √49
This is equal to 7, because 7*7 = 49
b) -3⁰
Any number to the power of zero is 1, so this can be written as an integer.
c) 1.2*10⁻²
This is equal to 0.012, so this can not be written as an integer.
d) 18/3
By taking the quotient, we rewrite:
18/3 = 6.
Then the only option that can't be written as an integer is the third one.
If you want to learn more about integers:
https://brainly.com/question/251701
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