Lauren says that two expressions 3x+4(2x+5) and 6x +5x . do these equal the same

these do not equal the same.

step by step: 3x + 4 (2x + 5)

multiply 4 by 2x, which is 8, then multiply 4 by 5, which is 20.

simplify; 3x + 8x + 20

combine like terms; (3x + 8x) + (20)

you’ll come up with 11x + 20

step by step: 6x + 5x

just add the two together and... bam, you get 11x.

step-by-step explanation: step 3 should really go to step seven, but anyway never mind.

1 ∠oln ≅ ∠lno

< 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⭐