Atelevision screen measures 18" tall by 24" wide. all televisions are advertised by giving the approximate length of the diagonal of the screen. how should the television in this example be advertised?

It should be advertised as a diagonal length of 30"

The answer is 30. use the formula a^2 + b^2 = c^2 if you come across something like this on a test :)

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