Vinyl wallpaper is needed to cover 4 walls of a room. each wall measures 12 feet by 8 feet and each bolt of wallpaper covers 72 square feet. deduct 52 square feet for windows and the door. if the wallpaper costs $13.90 per bolt, how much will the paper cost? a) $46 b)$64.09 c)$69.50 d)$74.13

The correct answer is B, $64.09. Brainliest?

21 is the answer the answer is 21

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