The terms in descending powers of a variable are
.
Given that
Polynomial; 
<h3>We have to determine</h3>
After arranging the terms in descending powers of a variable, select the opposite of the polynomial.
<h3>According to the question</h3>
A polynomial is an expression consisting of coefficients and variables which are also known as indeterminates.
<h3>Degree of a Polynomial</h3>
The degree of a polynomial can be defined as the highest degree of a monomial within a polynomial.
The degree of the polynomial can be defined as a polynomial equation having a single variable that has the greatest exponent.
Therefore
The terms in descending powers of a variable are;

Hence, The terms in descending powers of a variable are
.
To know more about Polynomial click the link given below.
brainly.com/question/10343430
1/2a - 7 + 1/2a = 1/3
1/2a + 1/2a = 1/3 + 7
2/2a = (1 + 21)/3
a = 22/3
Answer:
175.1
Step-by-step explanation:
Find the area of the semicircle:
(pi • radius²) / 2. [Radius is half of diameter]
(3.14 • 4²) / 2
(3.14 • 16) / 2
(50.24) / 2
25.12
Find the area of the parallelogram:
(base • height)
(30 • 5)
150
Add the areas of both shapes to get total area
25.12 + 150 = 175.12, round to the nearest tenths, 175.1
Hope this helps!
Answer: 3 1 0
Step-by-step explanation:
the next number is 17 thank you