The cost of 8-inch pizza is $7.00. the cost of 12-inch pizza is $12.50. which size is the better buy? explain

I would say the 12-inch pizza for $12.50 is the better buy because of the price per inch. If you were to buy the 8-inch pizza for $7, it would be a cost of $1.14 per inch. On the other hand, for a 12-inch pizza at a cost of $12.50, the cost per inch is only $0.96. So, even though buying an 8-inch pizza for only $7 seems "dirt-cheap", it's a better value to buy a 12-inch pizza and spend a little more money for more slices and less money per inch (if that makes sense haha). 

UPDATE: please disregard my answer! my math is wrong in my answer and I don't want anybody to get it wrong! :( I didn't realize that I miss calculated until after I had posted my answer! :(

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

Ais the answer for your question