A tank is 20% full contains 500 gallons of water. Find the maximum capacity of the water tank?PLease HELP ASAP

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

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