which number is not written n scientfc notaton? a)15.5 x 10^4 b)2.567x 10^-5 c)6.7 x 10^3 d) none of these
I think D
I think not, a) is written to two digits before the decimal, sci notation has one digit.
Letter A) is not in scientific notation do to the fact that 51. what ever is higher than ten, and to be a valid notation the first number has to be between one and ten, no lower then one and no higher than ten, so letter A) would not be in scientific notation
To determine which number is not written in scientific notation, you need to identify if the number is written in the form of "a × 10^b," where "a" is a number between 1 and 10 and "b" is an integer.
Let's analyze each option:
a) 15.5 × 10^4: This number is in scientific notation because 15.5 is a number between 1 and 10, and 10^4 is an integer.
b) 2.567 × 10^-5: This number is also in scientific notation because 2.567 is a number between 1 and 10, and 10^-5 is an integer.
c) 6.7 × 10^3: This number is in scientific notation because 6.7 is a number between 1 and 10, and 10^3 is an integer.
Since all the options are written in scientific notation, the correct answer is d) none of these.