It is found that 2.3 × 10^-4 is 20,000 times greater than 1.15 × 10^-8. so option D is the correct answer.
What is rounding a number to some specific place?
Rounding some number to a specific value is making its value simpler (therefore losing accuracy), mostly done for better readability or accessibility.
Rounding to some place keeps it accurate on the left side of that place but rounded or sort of like trimmed from the right in terms of exact digits.
Given as :
The first number= x = 2.3 × 10^-4
The second number= y = 1.15 × 10^-8
Let the first number is z times greater than second number;
i.e x = z × y
Or, z = x/y
Or, z = 2.3 × 10^-4/ 1.15 × 10^-8
Or, z = 2 × 0^4
∴ z = 20,000
Therefore, The first number is 20,000 times greater than second number.
Hence, 2.3 × 10^-4 is 20,000 times greater than 1.15 × 10^-8. so option D is the correct answer.
The complete question is
"Approximately how many times greater is 2.3x10^-4 than 1.15x10^-8 ?"
Learn more about rounding numbers here:
https://brainly.com/question/1285054
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