Mathematics, 20.11.2019 23:31 tesie

In 2005, 8.1×10 ^10 text messages were sent in the us. in 2010, the number of annual text messages had risen 1,810,000,000,000. about how many times as great was the number of text messages in 2010 than 2005.

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In 2005, 8.1×10 ^10 text messages were sent in the us. in 2010, the number of annual text messages h...