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3 years ago

R+2 1/4 = 4 1/2 what does r = ?

Mathematics

2 answers:

KiRa [710]3 years ago

8 0

Answer:

exact form: r= 9/4

decimal form: r=2.25

mixed number form: r= 2 1/4

Step-by-step explanation:

AlekseyPX3 years ago

4 0

Answer:

R=2 1/4 or 9/4

Step-by-step explanation:

You make the 4 1/2 a 4/24 so it equals 2 1/4

Than you subtract 4 2/4-2 1/4 to get 2 1/4

Hope this helps!!

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mihalych1998 [28]

Answer:

The slope of tangent at point (1,-2) is $\frac{2}{3}$ .

Step-by-step explanation:

The given equation of ellipse is

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Differentiate both sides with respect to x.

$\frac{d}{dx}(2x^2+xy+y^2)=\frac{d}{dx}(4)$

$\frac{d}{dx}(2x^2)\frac{d}{dx}(xy)+\frac{d}{dx}(y^2)=\frac{d}{dx}(4)$

$4x+x\frac{dy}{dx}+y+2y\frac{dy}{dx}=0$

$(4x+y)+(x+2y)\frac{dy}{dx}=0$

$\frac{dy}{dx}=-\frac{4x+y}{x+2y}$

Calculate the value of \frac{dy}{dx} at (1,-2).

$\frac{dy}{dx}_{(1,-2)}=-\frac{4(1)+(-2)}{(1)+2(-2)}$

$\frac{dy}{dx}_{(1,-2)}=-\frac{2}{-3}$

$\frac{dy}{dx}_{(1,-2)}=\frac{2}{3}$

Therefore the slope of tangent at point (1,-2) is $\frac{2}{3}$ .

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Keith_Richards [23]

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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