If construction costs are $160,000 per kilometer, find the cost of building the new road in the figure
1 answer:
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Answer:
<em>(–81, 9), (–36, 6), (–1, 1) </em> are the correct three points.
Step-by-step explanation:
Given the function:
Please refer to the attached image.
The green line shows the graph of actual function.
It is reflected over y axis.
The reflected graph is shown in black color in attached image.
When reflected over y axis, the sign of variable changes from Positive to Negative.
So, the resultant function becomes:
i.e. we will have to give the values of x as negative now.
so, the options in which value of x is negative are the possible answers only.
The possible answers are:
(–81, 9), (–36, 6), (–1, 1) and
(–49, 7), (–18, 9), (–1, 1)
Now, we will check the square root function condition.
In the 2nd option, (–18, 9) does not satisfy the condition.
So, the correct answer is:
<em>(–81, 9), (–36, 6), (–1, 1)</em>
Answer:
Option B.
Step-by-step explanation:
we know that
The area of a square is equal to
where
x is the length side of the square
In this problem we have
substitute and solve for x
suqre root both sides