Respuesta :
Answer: 7 blocks east
Step-by-step explanation:
If you skip the going north you would just walk all the blocks one way except for the turn
Answer: 5 blocks
Step-by-step explanation:
This is an application of Pythagoras theorem.
Her movement directly to the library in a straight line is the hypotenuse .
Let her walk directly to the library in a straight line be [tex]x[/tex] , then by Pythagoras theorem ,
[tex]x^{2} =4^{2}+3^{2}[/tex]
[tex]x^{2} = 16 + 9[/tex]
[tex]x^{2} = 25[/tex]
[tex]x = 5[/tex]