An object is thrown off a 256-foot-tall building, and the distance of the object from the ground is measured every second. the function that models the height, h, of the object after t seconds is h(t) = –16t2 + 96t + 256. determine the time when the object hits the ground. after how many seconds does the object hit the ground? a.2 b.4 c. 8 d. 16

The correct answer would be the fourth choice

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle