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olya-2409 [2.1K]
2 years ago
6

Which of the following represents a function

Mathematics
2 answers:
KIM [24]2 years ago
6 0

Answer:

D represents a function pretty sure I had a problem like this as well

Step-by-step explanation:

saw5 [17]2 years ago
5 0
C is the answer because the same input (x) number can not be matched twice with and output (y). The numbers in the input(x), or domain, constantly goes up by one, and the output(y), or range, constantly goes down by one.

I hope this helped!! Please correct me if I was wrong :)
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<h2>Hello!</h2>

The answer is:

The correct option is:

D. 40 feet.

<h2>Why?</h2>

To solve the problem and calculate the width of the river, we need to assume that the distance from A to B and the angle formed between that distance and the distance from A to the other point (C) is equal to 90°, meaning that we are working with a right triangle, also, we need to use the given angle which is equal to 34°. So, to solve the problem we can use the following trigonometric relation:

Tan\alpha =\frac{Opposite}{Adjacent}

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alpha is the given angle, 34°

Adjacent is the distance from A to B, which is equal to 60 feet.

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So, substituting and calculating we have:

Tan(34\°) =\frac{Width}{60ft}

Width=60ft*Tan(34\°)=60ft*0.67=40.2ft=40ft

Hence, we have that the correct option is:

D. 40 feet.

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