Alady can solve 3 math problems in 4 minutes she is half an hour before soccer practice to work on her math homework and talked her friends. she has 20 math questions for homework and she wants to complete them before talking with her friends how many of minutes will shot no have to complete her homework. i could not find the answer for the life of me and

she can complete 20 math problems in 26 mins and 40 secs . she has 3 mins and 20 secs to talk to her friends

Step-by-step explanation:

She can solve 3 math problems in 4 mins

She can solve 1 math problem in = 4/3 *60 minutes= 80 secs

She has to solve 20 math problems = 20*80= 1600 secs/60= 26 mins and 40 secs.

She has 3 minutes and 20 secs to talk to her friends.

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⭐