A man used 10 gallons of gasoline on a 180-mile trip. How many
gallons of gasoline will he use on a 450-mile trip?

Step-by-step explanation:

gs used in 180 mile=10 gallons

gas used in 1 mile=10/180=1/18

gas used in 450 mile=1/18×450=25 gallons

step-by-step explanation:

< 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⭐