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3 years ago

What is the absolute value of - 3.85

Mathematics

2 answers:

jek_recluse [69]3 years ago

8 0

Answer:

3.85

Step-by-step explanation:

To find the absolute value, you are finding the magnitude of your value, so your answer would be the same value without the negative sign.

Burka [1]3 years ago

8 0

3.85
absolute value is the given number whether positive or negative it’s always positive

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Answer:

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3 years ago

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

The radius of a circle is decreasing at a rate of 6.56.56, point, 5 meters per minute. At a certain instant, the radius is 12121

Ilia_Sergeevich [38]

Answer:

The rate of change of the area of the circle is approximately $-490.09 \ m^2/min$ .

Step-by-step explanation:

Given:

$\frac{dr}{dt} = -6.5 \ m/min$

radius $r =12 \ m$

We need to find the rate of change of the area of the circle at that instant.

Solution:

Now we know that;

Area of the circle is given by π times square of the radius.

framing in equation form we get;

$A= \pi r^2$

to find the rate of change of the area of the circle at that instant we need to take the derivative on both side.

$\frac{dA}{dt}=\frac{d(\pi r^2)}{dt}\\\\\frac{dA}{dt}= 2\pi r \frac{dr}{dt}$

Substituting the given values we get;

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Hence The rate of change of the area of the circle is approximately $-490.09 \ m^2/min$ .

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