Answer:
5.3!
Step-by-step explanation:
( in case you need work ) the angles are congruent so you set them equal to each other!
6x+12=9x-4
you then get 16=3x then divided its 5.3!
The sequence is geometric and the common ratio is 2
Answer:
a) 0.86602540378
b) 0.70710678118
c) 0.57735026919
Step-by-step explanation:
9x9 is 81 and yes its very hard haha