2(books)*$3.50=$7.00
4(books)*$5.25=$21.00
Total bill=$34.00
$34.00-($7.00+$21.00)=$6.00
The 3 books was sold for $6.00 but its original selling price is $6.00*2 which is $12.00 reason being the books was sold for half the original price.
Since 16 and 25 are perfect squares you can factor the first part.
4^2-5^2(b+3)^2
=(4-5(b+3))(4+5(b+3))
=(4-5b-15)(4+5b+15)
=(-11-5b)(19+5b)
Which can be expanded if necessary,
= -209+150b-25b^2
Answer:
15 and 6
Step-by-step explanation:
Answer:
45 cubic inches
Step-by-step explanation:
base (15) (5 times 3) times height (3)
Answer:
6 and 4
Step-by-step explanation: since it is "cm2" it means it was already halved. This means that the answer was originally 24, 6x4 is the only one that equals 24.