Question

evaluate. express your answer in scientific notation.
$8.6 \times 10^{3} + 6.9 \times 10^{3}$
answer attempt 1 out of 2
answer: $\square \times 0^{\square}$
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Explanation:

Step1: Factor out common term

$8.6 \times 10^3 + 6.9 \times 10^3 = (8.6 + 6.9) \times 10^3$

Step2: Add the decimal values

$8.6 + 6.9 = 15.5$

Step3: Adjust to scientific notation

$15.5 \times 10^3 = 1.55 \times 10^4$

Answer:

$1.55 \times 10^4$