Thuy planned for a square table to have a side length of 30 in, but found that it could be a little bigger at 39 in. She found the
change of scale below.
39 in. - 3 13
30 in 3 10
The changer scaleis 13 to 10
What is Thuy's error?
30 in
Thuy should have written the ratio as 3in.
30 in
Thuy should have written the ratio as 39 in-
Thuy should have divided both numbers by 6.
Thuy should have divided both numbers by 13.

The answer is b i’m sure

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