Problem PageQuestion It takes an older computer twice as long to send out a company's email as it does a newer computer. Working together, it takes the two computers minutes to send out the email. How long will it take the newer computer to send out the email on its own?

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health? a. air quality data gathered by new instruments can be used to reduce exposure to pollutants. b. new technologies enable natural and human-made pollution sources to be located and monitored. c. air quality data gathered by new instruments can be used to predict trends in pollution over time. d. new technologies allow governments to make informed decisions about the regulation of pollution. (choose more than one)

Which tab should you open to find the option for adding a header?

What are "open-loop" and "closed-loop" systems