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Anna35 [415]
3 years ago
10

13. If AC = 16, DE = 8 and BE = 6, find AE. Please show all work

Mathematics
1 answer:
ollegr [7]3 years ago
5 0

Answer:

AE = 4

Step-by-step explanation:

Use the formula

AE*EC = DE*EB

Since we don't know AE or EC, let AE = x and then EC will = 16 - x.  The formula then becomes

x(16 - x) = 8(6)

16x-x^2=48

Getting everything on one side and setting it equal to 0 will allow us to factor for x:

x^2-16x+48=0

Factoring that gives you that

x = 4 and x = 12.  That means that one of those sements has a length of 4 and the other has a length of 12.  AE is shorter so it's 4 and EC = 12

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The shaded area is calculated by subtracting the area of the inner circle from the area of the outer circle.

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shaded area = πr₁² - πr₂² (r₁ is outer and r₂ is inner )

A = π (4² - 2.5²)

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We will conclude that:

  • The domain of the exponential function is equal to the range of the logarithmic function.
  • The domain of the logarithmic function is equal to the range of the exponential function.

<h3>Comparing the domains and ranges.</h3>

Let's study the two functions.

The exponential function is given by:

f(x) = A*e^x

You can input any value of x in that function, so the domain is the set of all real numbers. And the value of x can't change the sign of the function, so, for example, if A is positive, the range will be:

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For the logarithmic function we have:

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As you may know, only positive values can be used as arguments for the logarithmic function, while we know that:

\lim_{x \to \infty} ln(x) = \infty \\\\ \lim_{x \to0} ln(x) = -\infty

So the range of the logarithmic function is the set of all real numbers.

<h3>So what we can conclude?</h3>
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If you want to learn more about domains and ranges, you can read:

brainly.com/question/10197594

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