Write 15 cookies to 40 brownies

Can you divide 25 into 4 equal groups? explain why or why not.

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample