X = 8
because 8 x 2 = 16
16 - 9 = 5
5 x 3 = 15
65,000 give me a thanks or brainiest answer if this helps!
Answer: 90°
Explanation: the sum of all the angles in a triangle = 180. So 70 + 30 = 90 and 180-90=90
25%
since there are 4 books, and only one is a mathematics book, there is a 1/4 chance. in other words, 25%
