Question

1. how is 120,700 written in scientific notation?$\bigcirc$ $120.7 cdot 10^{3}LXB0\bigcirc$ $1.207 cdot 10^{5}$$\bigcirc$ $0.1207 cdot 10^{6}$2. what number is equivalent to $6.75 cdot 10^{-4}$?$\bigcirc$ 0.000675$\bigcirc$ 0.0675$\bigcirc$ 6,750$\bigcirc$ 67,5003. a balance accurate to one-hundredth of a gram measures the mass o$\bigcirc$ 2$\bigcirc$ 3$\bigcirc$ 4$\bigcirc$ there is not enough information to answer this question

Explanation:

Step1: Define scientific notation rule

Scientific notation is $a \times 10^n$, where $1 \leq a < 10$, $n$ is integer.

Step2: Convert 120,700 to valid form

Move decimal 5 places left: $1.207 \times 10^5$

Step3: Convert $6.75 \times 10^{-4}$

Move decimal 4 places left: $0.000675$

Step4: Analyze third question

No measured mass value provided.

Answer:

1. $1.207 \cdot 10^{5}$
2. $0.000675$
3. There is not enough information to answer this question