Answer:
129
Step-by-step explanation:
The expression for the total area of the wall is 10x.
The area of each section is 2x.
<h3>How to find the area of a rectangle?</h3>
The wall is 10 feet tall, but its length is unknown.
The whole wall is rectangular.
Therefore,'
area of a rectangle = lw
where
Therefore, the expression for the total area of the wall is as follows;
area = 10x
The area of each section can be found by dividing the length of the whole wall by 5 and multiplying by 10.
Therefore,
area of each section = x / 5 × 10
area of each section = 10 / 5 x
area of each section = 2x
learn more on area here: brainly.com/question/20424562
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Answer:
f(x) = 2x² +13x -7
Step-by-step explanation:
Given a root r, a factor of the expression with that root is (x -r). For your roots, the factors of a suitable polynomial are ...
(x -1/2)(x +7)
Since you don't want any fractions, you can multiply this by 2:
(2x -1)(x +7)
And you can eliminate parentheses and write it as a function.
f(x) = (2x)(x +7) -1(x +7) = 2x² +14x -x -7
f(x) = 2x² +13x -7
Answer:
bout 47
Step-by-step explanation: