about $2.5 \\times 10^{5}$ people participated in the march on washington. about $2.5 \\times 10^{4}$ people…
about $2.5 \\times 10^{5}$ people participated in the march on washington. about $2.5 \\times 10^{4}$ people participated in the selma to montgomery march.\nwhat is the total number of people who participated in the two marches?\nwrite your answer using scientific notation.
Answer
Explanation:
Step1: Rewrite terms to same exponent
$2.5 \times 10^4 = 0.25 \times 10^5$
Step2: Add the two values
$(2.5 + 0.25) \times 10^5$
Step3: Simplify the sum
$2.75 \times 10^5$
Answer:
$2.75 \times 10^5$