Answer :
Final answer:
The number 7000 has one significant figure. In scientific notation, it would commonly be written as 7x10^3 to specify one significant figure. If written as 7000.0, it would have five significant figures.
Explanation:
The term significant figures, or sig figs, refers to the digits in a number that carry meaningful information about its precision. The number 7000 has only 1 significant figure because none of the zeros are explicitly stated to be significant. It is common in scientific notation to write the number as 7x10^3 to clearly indicate the one significant figure, the 7. However, if the number were written as 7000.0, it would have five significant figures because the decimal point implies that all preceding zeros are significant.
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