0 = -5n-2n
well im just going to give you the anwser
n=0
unless you want the work then ill show you
Answer:
Step-by-step explanation:Because many objects are not regularly shaped their volume cannot be determined using a volume formula. The volume of these objects can be found by water displacement. A volume of water sufficient to cover the object is placed in a graduated cylinder and the volume read. The object is added to the cylinder and the volume read again. The difference between the two volumes is the volume of the object. This method is demonstrated using the same battery used above.
3 small notebooks and 3 large ones
My reasoning is 3 times 7 is 21
63 - 21 = 42
3 times 14 is 42
So 42 + 21 = 63
Therefore 3 small and 3 large
See attached for the work
(x²+3x-4)(x-5)
x³-5²+3x²-15x-4x+20
x³-2x²-19x+20