Answer:
-9 degrees Celsius
Step-by-step explanation:
mark brainliest if helped :)
Answer: 
Step-by-step explanation:

we can use formula


now, we can cancel terms
and then we can simplify it



now, we can simplify it
and we get
...........Answer
Answer:
sometimes
Step-by-step explanation:
We can consider the example of a cuboid.
It is a rectangular solid whose all faces are made of rectangles.
But if we will consider a example of cube; which is also a kind of rectangular solid whose all faces are made up of square.
so we can get some solids whose faces are other than squares as well and some whose faces are squares.
Hence, we could say that:
The faces of a rectangular solid are sometimes square.