Question

express your answer in scientific notation.
$0.042 + 2.2 \times 10^{-4}$
ver attempt 2 out of 2
swer: $2.242 \times 0^{-4}$
submit answer

Explanation:

Step1: Convert 0.042 to scientific notation

$0.042 = 4.2 \times 10^{-2} = 420 \times 10^{-4}$

Step2: Add the two terms

$420 \times 10^{-4} + 2.2 \times 10^{-4} = (420 + 2.2) \times 10^{-4}$

Step3: Simplify and adjust to proper form

$422.2 \times 10^{-4} = 4.222 \times 10^{-2}$

Answer:

$4.222 \times 10^{-2}$