Answer:
First three terms of given sequence are
9, 13, 17
Step-by-step explanation:
Answer:
EBC and CBF are supplementary.
EBD=66
Step-by-step explanation:
Since vertical angles are congruent, ABE=CBF
ABE=40-x
40-x + 6x-30=90
5x+10=90
5x=80
x=16
16(6)-30=66
The answer is x = -2 +- sqrt 7