Q. Subtract. Write your answer in scientific notation.(6.9×109)−(3.89×109)Choices:(A) 3.01×109(B) 3.01×1010(C) 2.684×109(D) 2.684×1010
Calculate Coefficients: We have: (6.9×109)−(3.89×109)Since the powers of 10 are the same, we can subtract the coefficients directly.What is 6.9−3.89?6.9−3.89=3.01
Convert to Scientific Notation: Write the answer in scientific notation.Substitute 3.01 for the coefficient a and 9 for the exponent b in a×10b.Scientific notation: 3.01×109
Find Equivalent Expression: Choose the equivalent expression for (6.9×109)−(3.89×109).(6.9×109)−(3.89×109)=3.01×109(6.9×109)−(3.89×109) is equivalent to 3.01×109.
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