4. What is the x-value of the solution to this
system? Use Elimination, ,
6x + 2y = 18
3x - 2y = -9
a. -1
b. 1
C. 3
d. 6

B) 1

Step-by-step explanation:

Since we are using elimination, we can just cancel 2y and -2y. No need of multiplying anything if we are just looking for x.

We add the equations and get:

9x=9

Then divide and the final answer is:

x=1

:)

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐