Find the values of the trigonometric functions of θ from the information given. cos(θ) = 4/11, sin(θ) < 0

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?