Ellis's backyard has a 6.25 by 6.25 m patio. She would like to build a 1.5 m wide extension around 3 sides of the patio, as the figure shows. She will buy 0.25 by 0.25 m tiles that come 25 to a package.
Pro
Tea
patio
extension
How many packages does Ellis need to buy to build the extension?

Name the most appropriate metric unit for each measurement

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics