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the local bookstore is having a sole on used books . nate bought 3 hardcover books and 7 paperback books and spent 29.50. tia bought 2 hardcover books and 5 paperback books and spent 20.50. what is the cost of a hardcover book

Respuesta :

carlosego
The first thing we must do for this case is to define variables.
 We have then:
 x = cost of a hardcover book
 y = cost of a paperback book
 We write the system of equations:
 3x + 7y = 29.50
 2x + 5y = 20.50
 The solution to the system is:
 x = 4 $
 y = 2.5 $
 Answer:
 the cost of a hardcover book is $ 4
icolon

Answer:

4

Step-by-step explanation:

If u work it out then it comes to 4

I know i didn't do the work but please trust me cause i know i got it right ._.

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