Richard estimates that he can apply fertilizer to 4,485 square feet of grass in ¾ hour. how many square feet of grass can richard fertilize per hour?

5,980 is the answer because if you divide 4,485 by 3 you get 1,495 then you multiply 1,495 by 4 and you get 5,980

8doors on the second floor

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.