3 years ago

Question in the image will give brainlyy

Mathematics

1 answer:

Tcecarenko [31]3 years ago

3 0

The answer would be d

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2 years ago

Find an equation of the tangent line to the curve 2(x2+y2)2=25(x2−y2) (a lemniscate) at the point (−3,1). An equation of the tan

valina [46]

$2(x^2+y^2)^2=25(x^2-y^2)$

Let $y=y(x)$ , so that differentiating both sides wrt $x$ gives

$4(x^2+y^2)\left(2x+2y\dfrac{\mathrm dy}{\mathrm dx}\right)=25\left(2x-2y\dfrac{\mathrm dy}{\mathrm dx}\right)$

If $x=-3$ and $y=1$ , the above reduces to

$40\left(-6+2\dfrac{\mathrm dy}{\mathrm dx}\right)=25\left(-6-2\dfrac{\mathrm dy}{\mathrm dx}\right)\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac9{13}$

This is the slope of the tangent line, which has equation

$y-1=\dfrac9{13}(x+3)\implies\boxed{y=\dfrac{9x+40}{13}}$

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2 years ago

PLEASE ANSWER ASAP!! WILL GIVE 50 POINTS! AND BRAINLIST!

levacccp [35]

$\frac{3}{5} - \frac{1}{4} = \frac{7}{20}$
then
$\frac{7}{20} \div \frac{7}{10} = \frac{1}{2}$

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3 years ago

Hi pls help me!!! thank you

elena-s [515]

Step-by-step explanation:

Circumference (C):

$C = 2\pi r = 2\pi(5\:\text{ft}) = 31.4\:\text{ft}$

Area (A):

$A = \pi r^2 = \pi(5\:\text{ft})^2 = 78.5\:\text{ft}^2$

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2 years ago

What's number 2 and 3

gtnhenbr [62]

El numero 2 eso seria

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3 years ago