Tom wants to buy a dictionary that costs $19.50, a dinosaur book that costs $8.50, and a children's cookbook that costs $5.50. If he has saved $9.00 from his allowance, how much more money does Tom need to buy all three books? Don't forget to use a dollar sign and proper decimal.

The three books cost 33.50 - 9.00 = 24.50. Tom needs 24.50 more to afford all three books

Step-by-step explanation:

part a: $33.50

part b: $24.50

Step-by-step explanation:

add up all the costs of the books so $19.50+$8.50+$5.50=$33.50

next just subtract $9 from $33.50

$33.50-$9.00=$24.5

< 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⭐