Mathematics: In October 2009,there were approximately 5x10^7 members of a website. In January 2013, there were approximately 2x10^8 members. How many more members were there in January 2013 than in October 2009? Write your answer in scientific notation. There weremore members in January 2013 than in October 2009.

Vertex is the tip(sharpest) point of the curve. As you can see the tip of the curve has coordinates x = 1 and y = 3, vertex of curve is (1,3)...

In October 2009,there were approximately 5x10^7 members

Ответ:

nataliamontirl8152

18.01.2022

Mathematics

$There\ were\ 1.5\times 10^8\ more\ members\ in\ January\ 2013\ than\ in\ October\ 2009.$

Step-by-step explanation:

$Number\ of\ members\ in\ October\ 2009=5\times 10^7\\\\Number\ of\ members\ in\ January\ 2013=2\times 10^8\\\\Number\ of\ members\ in\ January\ 2013=2\times 10\times 10^7\\\\Number\ of\ members\ in\ January\ 2013=20\times 10^7$

More members in January 2013=Number of members in January 2013-Number of members in October 2009.

$The\ number\ of\ members\ that\ are\ more\ in\ January\ 2013=20\times 10^7-5\times 10^7\\\\The\ number\ of\ members\ that\ are\ more\ in\ January\ 2013=(20-5)\times 10^7\\\\The\ number\ of\ members\ that\ are\ more\ in\ January\ 2013=15\times 10^7\\\\The\ number\ of\ members\ that\ are\ more\ in\ January\ 2013=1.5\times 10\times 10^7\\\\The\ number\ of\ members\ that\ are\ more\ in\ January\ 2013=1.5\times 10^8\\\\There\ were\ 1.5\times 10^8\ more\ members\ in\ January\ 2013\ than\ in\ October\ 2009.$

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