What is a group of organs that work together to perform a common function

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

You use math in day-to-day routines when grocery shopping, going to the bank or mall, and while cooking. how do you imagine you will use math in your healthcare career?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?