In rectangle ABCD the diagonals intersect each other at point O and m∠ABD = 30°. Find BC if AC = 16 in.

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !