Q. Subtract. Write your answer in scientific notation.(9.75×109)−(2.69×109)Choices:(A) 7.06×106(B) 7.06×109(C) 7.06×108(D) 7.06×107
Subtraction Problem: We have the following subtraction problem in scientific notation:(9.75×109)−(2.69×109)Since the powers of 10 are the same, we can directly subtract the coefficients.What is 9.75−2.69?9.75−2.69=7.06
Subtract Coefficients: Write the answer in scientific notation.Since we subtracted the coefficients, the power of 10 remains the same.Scientific notation: 7.06×109
Write in Scientific Notation: Choose the equivalent expression for (9.75×109)−(2.69×109).(9.75×109)−(2.69×109)=7.06×109The correct choice is (B) 7.06×109.
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