In each pair , some of the angles are two triangles in degrees are given but one of the angles is missing. use the information to decide if the triangles are similar or not explain how you know
triangle a : 53 , 71 _ ; triangle b: 53,71
triangle c: 90 , 37_ ; triangle d : 90 , 53,_
triangle e : 63 , 45 _ ; triangle f : 14 , 71 _
triangle g : 121 , _ , _ ; triangle h : 70, _ , _

List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

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%

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?