The section inside the border is x inches and (12-x) inches wide. How do I write a function to represent the area a of the secti
1 answer:
Answer:
The function to represent the area a of the section inside the border is
Step-by-step explanation:
Given section inside the border is inches and
inches.
We need to write the function to represent the area of the section inside the border.
We can see the length of border is and width of the border is
.
So, the area of the rectangle will be
The area will be
So, the function to represent the area a of the section inside the border is
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Answer: The answer is 381.85 feet.
Step-by-step explanation: Given that a window is 20 feet above the ground. From there, the angle of elevation to the top of a building across the street is 78°, and the angle of depression to the base of the same building is 15°. We are to calculate the height of the building across the street.
This situation is framed very nicely in the attached figure, where
BG = 20 feet, ∠AWB = 78°, ∠WAB = WBG = 15° and AH = height of the bulding across the street = ?
From the right-angled triangle WGB, we have
and from the right-angled triangle WAB, we have'
Therefore, AH = AB + BH = h + GB = 361.85+20 = 381.85 feet.
Thus, the height of the building across the street is 381.85 feet.
