the mass of a hummingbird egg is 0.000374 grams. how is this number written in scientific notation? a…
the mass of a hummingbird egg is 0.000374 grams. how is this number written in scientific notation? a 3.74×10⁻⁵ b 3.74×10⁻⁴ c 0.374×10⁻³ d 3.74×10⁴
Answer
Answer:
B. $3.74\times 10^{-4}$
Explanation:
Step1: Recall scientific - notation form
Scientific notation is $a\times 10^{n}$, where $1\leqslant|a|\lt10$ and $n$ is an integer.
Step2: Move the decimal point
For the number $0.000374$, move the decimal point 4 places to the right to get a number between 1 and 10. We get $a = 3.74$.
Step3: Determine the exponent
Since we moved the decimal point 4 places to the right, the exponent $n=-4$. So, $0.000374 = 3.74\times 10^{-4}$.