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Semmy [17]
3 years ago
14

With steps please

Mathematics
1 answer:
Nat2105 [25]3 years ago
8 0

Answer: 75\ m

Step-by-step explanation:

Given

The tower is 45 m high and Clinometer is set at 1.3 m above the ground

From the figure, we can write

\Rightarrow \tan 32^{\circ}=\dfrac{43.7}{x}\\\\\Rightarrow x=\dfrac{43.7}{\tan 32^{\circ}}\\\\\Rightarrow x=69.93\ m

Similarly, for \triangle ACD

\Rightarrow \tan 47^{\circ}=\dfrac{43.7+y}{x}\\\\\Rightarrow 69.93\times \tan 47^{\circ}=43.7+y\\\\\Rightarrow 74.99=43.7+y\\\Rightarrow y=31.29\ m

Height of the tower is 43.7+31.29\approx 75\ m

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The production graph of the company is a quadratic graph

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To interpret the model, we simply evaluate the options one after the other

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From the graph, the function value decreases when x increases from 3000 to 4000.

This means that this option is false

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This means that options (c) and (d) are true

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From the graph, the function value increases when x increases from 1500 to 2000.

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