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

answer: 91

step-by-step explanation:

hope this !

step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)