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2 years ago

12

Find the length of the diameter of circle C. 1" 2" 4"

2 answers:

ycow [4]2 years ago

4 0

The diameter is the radius doubled. So, the radius CK is 2, so the diameter would be 4.

katrin [286]2 years ago

3 0

The diameter of a circle can be found with the formula:

$Diameter = 2* Radius$

So diameter is two times or twice the radius.

In the given figure, in circle C , the measure of radius KC is 2 inches.

As we know diameter is two multiplied by radius, so we can multiply our radius KC with 2 to get the diameter of circle C.

Plugging the value of radius in the given formula we have,

$Diameter = 2* 2$

$Diameter = 4$

So the diameter of circle C is 4 inches.

Answer: Diameter is 4 inches for the circle C. Last option 4" is the right choice.

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For the equation given below, evaluate y′ at the point (−2,2)<br> xe^y−4y=2x−4−2e^2

jeka94

Implicit differentiation
chain rule is important here

I'll show the steps partially
$e^y+xe^yy'-4y'=2$
$xe^yy'-4y'=2-e^y$
$y'(xe^y-4)=2-e^y$
$y'=\dfrac{2-e^y}{xe^y-4}$
now evaluate for (-2,2)
x=-2 and y=2
$y'=\dfrac{2-e^2}{-2e^2-4}$
$y'=\dfrac{2-e^2}{-2e^2-4}$
$y'=\dfrac{e^2-2}{2e^2+4}$
that's it, simplest form

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