Question

express the following calculation in scientific notation:

(0.0095 + (8.5 \times 10^{-3}) =)

• none of these.
• (8.1 \times 10^{-3})
• (1.8 \times 10^{2})
• (8.1 \times 10^{3})
• (1.8 \times 10^{-2})

question 12

express the following calculation in scientific notation:

(653 / (5.75 \times 10^{-8}) =)

• (1.14 \times 10^{6})
• (1.14 \times 10^{-6})
• (1.14 \times 10^{10})
• none of these.
• (1.14 \times 10^{-10})

Explanation:

Convert values to standard decimal form

$$
LATEXBLOCK0
$$

Apply significant figures and scientific notation for Question 1

$$
LATEXBLOCK1
$$

Calculate and apply significant figures for Question 2

$$
LATEXBLOCK2
$$

Answer:

Question 1

• none of these.
• \(8.1\times10^{-3}\)
• \(1.8\times10^{2}\)
• \(8.1\times10^{3}\)
• \(1.8\times10^{-2}\) (Correct answer)

Question 2

• \(1.14\times10^{6}\)
• \(1.14\times10^{-6}\)
• \(1.14\times10^{10}\) (Correct answer)
• none of these.
• \(1.14\times10^{-10}\)