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3 years ago

HELP QUICK PLZ

Mathematics

2 answers:

Natalka [10]3 years ago

7 0

Your question: Which equation can be used to find the solution of (1/3)^d−5^=81?

Just so you know: I already know someone else has answered, but I decided to give a answer that might help a bit more.. mate.

<h3>Answer:<em> </em>D) -<em>d</em>-5=4</h3>

First explanation: In order to find out what "D" means, you have to create equivalent expressions in the equation that all have equal bases, then solve for <em>d </em>.

Second explanation: To find the solution on each answer you must move all terms not containing <em>d </em> to the right side of the equation.

maks197457 [2]3 years ago

3 0

The answer is D I guess

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I will give brainliest answer

adell [148]

Answer: A=351.68 cm²

Step-by-step explanation:

To find the area of the shaded region, we would subtract the area of the circle by the area of the inner circle.

Area of Circle

$A=\pi r^2$

$A=\pi (11)^2$

$A=121\pi$

Area of inner (white) circle

$A=\pi r^2$

$A=\pi (3)^2$

$A=9\pi$

Now that we have the area to the circle and inner circle, we would subtract to find the area of the shaded region.

$A=121\pi -9\pi$

$A=112\pi$

$A=351.68 cm^2$

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Dmitry [639]

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