Simplify the expression.
-3(5g + 1) + 8g =
Please answer fast! I got 2 minutes!

-7g - 3

Step-by-step explanation:

1.(0 -  3 • (5g + 1)) +  8g

Pull out like factors :

2.-7g - 3  =   -1 • (7g + 3)

and your answer is  -7g - 3

-1(7g + 3)

Step-by-step explanation:

-3(5g + 1) + 8g

opening the bracket

= -15g -3 + 8g

collect like terms

= -15g + 8g - 3

= -7g - 3

dividing each by -1

= -1(7g + 3)

< 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⭐