A. Demontrer que le quadrilatere acdb est parallelogramme en justifiant la reponse ( celle-ci doit contenir entre 10 et 20 mots)

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

Can someone answer this question for me