Which of the following describes a magnetic field?
a) the area where the magnet is
b) the area where the domains are
c) the area where the magnet is the strongest
d) the area where the magnetic force is exerted

The correct answer should be :

D) the area where the magnetic force is exerted.

Hope this helps,

Davinia.

15.3 cos 65 degrees trig

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form