Answer: 100
Step-by-step explanation:
To find the cost of each book, you need to divide the money spent on all of the books by the number of books.
$39 / 10 = $3.90 per book
Answer:
what does DBA mean (sorry dont knowhow to comment)
Step-by-step explanation:
Answer:
x = ± 
Step-by-step explanation:
Given
3x² - 9 = 0 ( add 9 to both sides )
3x² = 9 ( divide both sides by 3 )
x² = 3 ( take the square root of both sides )
x = ± 