There are 64 players in a chess tournament. After each round, half of the players are eliminated. How many rounds must be played until the players reach the semifinals with four players left?
Write an equation to represent the situation. Then solve the equation.

the answer is 5/3x+7/5y+7

4th option is correct xy=-10

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step-by-step explanation:

answer: the sun

explanation:

water cycle describes the evaporation of water from earth's surface, formation of clouds and precipitation water back onto the surface of earth. seventy percent of the earth is covered with water in the form of seas and oceans. the heat of the sun causes the evaporation of water from the surface of the ocean. the water vapors rise and condense to form water droplets. the collection of these water droplets form clouds which rain down again.

the evaporation of the oceans surface water as part of the water cycle is caused by the sun