Find the coordinates of the midpoint of the hypotenuse.
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Which expression is equivalent to sq-80

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

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.