Danielle wants to treat her friends to a night at the movies . The movie tickets cost $9.50 and she wants to spend $20 on popcorn and candy. If she has $130 dollars to spend, how many friends can she invite?

130-20 that is 110 that’s how much she can spend on friends so if we round the 9.5 to 10 and divide 110 by 10 you get 11 friends

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