Parker's account balance was $12.84 so he made a deposit of $20

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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%

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?