Help will give crown Find the missing side length

At diana's closet, 1/6 of the clothes are white and another 7/12 are black. what fraction of the clothes is either black or white?

(01.04 mc) an ice sculpture is melting because of heat. assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours?

Given tan∅=4/3 and π< ∅< (3π)/2; find cos2∅ a. -24/25 b. 24/25 c. -24/7 d. -7/25