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Chapter 0: Problem 86

Write each number in scientific notation. $$-0.00000000405$$

Short Answer

Expert verified
\(-4.05 \times 10^{-9}\)

Step by step solution

01

Identify the Decimal Place

Identify the significant figures in -0.00000000405. The significant figures are '405', so we need to move the decimal point so that only these figures are to the left of the decimal.
02

Moving the Decimal point

Move the decimal point to make the number -4.05. Count how many places you moved the decimal point. In this case, you moved the decimal point 9 places to the right.
03

Writing in Scientific Notation

Write the number as -4.05 times 10 to the power of the number of places you moved the decimal point. Since you moved the decimal 9 places, the scientific notation is \(-4.05 \times 10^{-9}\)

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