2 years ago

CAN SOMEONE PLEASE HELP!! I DONT UNDERSTAND. i WILL GIVE BRAINLIEST!!!!

Mathematics

2 answers:

HACTEHA [7]2 years ago

7 0

Answer:

u should give me the formula for ur question cuz I kind of understand but I did it years ago

Yanka [14]2 years ago

4 0

55cm is the lateral area

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The graph of the equation 2x2 + xy + y2 = 4 is the tilted ellipse pictured below; i.e. the points (x,y) in the plane that satisf

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

$2x^2+xy+y^2=4$

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 $\frac{2}{3}$ .

3 0

2 years ago

Read 2 more answers

What is the area of the circle with a D equals 10

Maslowich

Answer:

A =78.5

Step-by-step explanation:

We need the radius to find the area of a circle

r = d/2 = 10/2 =5

The area of a circle is given by

A = pi r^2

A = 3.14 (5)^2

A =3.14 (25)

A =78.5

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2 years ago

I have a figure with the shaded region in the middle

stealth61 [152]

Answer:

Step-by-step explanation:

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3 years ago

Please help me thank you very much

frez [133]

Answer is A
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2 years ago

Number 15 please help

OverLord2011 [107]

I would believe its 10

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2 years ago