Because when you build things with real wood and tools, negative length has no physical meaning. There are still two square roots, but we ignore the one that's not useful.
The volume of a cube is s^3, where s is the length of a side.
If you have 84 cubes with sides of 1/3 in, the total volume is:
V=84(1/3)^3 in^3
V=84/27 in^3
V=28/9 in^3
V≈3.11 in^3 (to nearest hundredth of a cubic inch)
Answer:
x = -3
Step-by-step explanation:
You can see on the graph, it’s going straight vertically. The x value will always be -3 while the y value is infinite.
Let the full marks be represented by = x
As given, 80% of x is 75
So,
x= 
x=93.75
Hence, full marks is 93.75
We can check also- 
=75
