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03.10.2019 •
Chemistry
How do you write 145,000,000 in scientific notation?
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Ответ:
Explanation:
A number in scientific notation has the form N × 10ⁿ
where N is a decimal number called the mantissa and n is an integer called the exponent.
We must have 1 ≤ N < 10
Step 1. Determine the mantissa
Move the decimal place to the left to create a new number between 1 and 10.
145 000 000 ⟶ 1.450 000 00; N = 1.45
Step 2. Determine the exponent.
The exponent is the number of times you moved the decimal to get the mantissa.
You moved the decimal eight places to the left, so the exponent n = 8.
Step 3. Write the number in scientific notation
The number in scientific notation is
.
Ответ: