If your trying to solve for x it’s 40, x=40
2 times 1/2x =2x20
x=2x20
x=40
The degree of the sum and difference of the polynomials are 6 and 7 respectively.
given polynomials are:


the sum of polynomials = 
the difference of polynomials = 
<h3>what is the degree of a polynomial?</h3>
A polynomial's degree is the highest or the greatest power of a variable in a polynomial equation.
degree of sum = monomial with highest power = 5+1=6
degree of difference = monomial with highest power = 3+4 = 7
therefore, the degree of the sum and difference of the polynomials are 6 and 7 respectively.
to get more about polynomials refer to:
brainly.com/question/1600696
A constant is a number that never changes value. Example:
x + 3 = 5, 3 and 5 are constants.
Solution: 5,400 feet^2
Step by step solution:
3/4=0.75
(80*0.75)(120*0.75)
(60)(90)
5400
5,400 feet^2
Hope that helps :)