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The suare root of 9x plus 7 plus the square rot of 2x equall to 7
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Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.
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Evaluate the expression 4 ÷ 2 + 52....
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