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stiv31 [10]
3 years ago
14

Please help(: I’ll be posting more I just wanna pass

Mathematics
1 answer:
Agata [3.3K]3 years ago
4 0

Answer:

It's y = (5)(0.2)^x

_____________

Step-by-step explanation:

Exponential functions have a standard form of ab^x

Where a is the starting value, and b is the exponential growth or decay.

Because the numbers are getting smaller and smaller, it is a decay so b must be less than one.

We can eliminate the first choice because when x is 1, y is 1. If this where the equation we would get (5) (1/2) ^ 1 = 5 × 1/2 = 2.5 ≠ 1.

So the answer must be the second choice.

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More math help pls. :)
Step2247 [10]

By using trigonometric relations, we will see that x = 9.97°.

<h3>How to find the missing angle?</h3>

First, we need to find the bottom cathetus of the smaller triangle, we will use the relation:

Tan(θ) = (opposite cathetus)/(adjacent cathetus).

Where:

  • θ = 26°
  • Adjacent cathetus = k
  • Opposite cathetus  = 55ft.

Replacing that we get:

Tan(26°) = 50ft/k

Solving this for k, we get:

k = 55ft/tan(26°) = 112.8 ft

Now, we can see that the longer triangle adds 200ft to this cathetus, so now we will have:

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Then we have:

Tan(x) = (55ft/312.8ft)

Using the inverse tangent function in both sides, we get:

x = Atan(55ft/312.8ft) = 9.97°

If you want to learn more about right triangles, you can read:

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Time Sensitive Question
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