Answer:
6.25 cm
Step-by-step explanation:

Hope this helps!
Answer:

Step-by-step explanation:
If the ruler is divided into 2 equal parts, divide 7 inches by 2
7/2 = 3.5 or 3
Step-by-step explanation:
volume is often quantified numerically using the SI derived unit, the cubic metre.
Answer:
He lost 7 dollars
Step-by-step explanation:
Answer:
For
, the group is CLOSED as it a polynomial.
Step-by-step explanation:
Here, the given polynomials are:

Now, a group G is said to be <u>CLOSED UNDER SUBTRACTION</u> if,
a and b are he elements of G ⇒ (a-b) is ALSO AN ELEMENT of G
Now, here:

or, 
Also, R(x) is a POLYNOMIAL.
So, R(x) is an Element of group G.
So, the set G of polynomials.
Hence, for the polynomial
, it will be a polynomial the group is CLOSED.