A12-ft. ladder is leaning against a wall and makes a 77 angle with the ground. how high does the ladder reach up the wall?

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Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

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