I think the answer is the third one
The difference of two cubes is factored by
x^3-y^3=(x-y)(x^2+xy+y^2)
In this case it would be
C)
Answer:
2. 18-x-x-x = 0
x = 6
3. 35-y-y-y-y-y = 0
x = 7
4. 42-z-z-z-z-z-z = 0
z = 7
Step-by-step explanation:
I'm thinking you'll need four strips. Each one is 1/3, so to create a whole foot, you'd need three.
So I would say you would need 36 strips, as 12 * 3= 36.
It's a proportion. Set it up as 3/30 * x/11= 1.1