A store prints a request on each receipt asking
customers to fill out a satisfaction survey online
if they are willing
What type of sample is this?

Simple random sample
Stratified random sample
Cluster random sample
None of the above

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

If jaime wants to find 60% of 320, which table should he use?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?