Q. Write the answer in proper scientific notation:40009×107
Identify Numbers: Identify the numbers involved and their current form.We have the numerator 9×107 and the denominator 4000. We need to divide these numbers to simplify the expression.
Convert Denominator: Convert the denominator into a power of 10 to facilitate division in scientific notation.4000 can be written as 4×103 because 4000=4×1000 and 1000 is 103.
Rewrite as Fraction: Rewrite the division as a fraction with both numerator and denominator in scientific notation.(9×107)/(4×103)
Divide and Subtract: Divide the coefficients 49 and subtract the exponents of 10(7−3). The coefficient division gives us 2.25, and subtracting the exponents gives us 10(7−3)=104.
Express in Notation: Express the result in proper scientific notation.2.25×104 is already in proper scientific notation, as the coefficient is between 1 and 10.