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3 years ago

A person is shopping for cereal, oranges, and eggs at a grocery store.

Mathematics

1 answer:

Romashka [77]3 years ago

8 0

I got b have a good day :)

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Find dy/dx for 4 - xy = y^3

storchak [24]

Answer:

$\frac{dy}{dx}=-\frac{y}{3y^2+x}$

Step-by-step explanation:

4-xy=y^3

dy/dx=?

$\frac{d(4-xy)}{dx}=\frac{d(y^3)}{dx}\\ \frac{d(4)}{dx}-\frac{d(xy)}{dx}=3y^{3-1}\frac{dy}{dx}\\ 0-(\frac{dx}{dx}y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(1y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -y-x\frac{dy}{dx}=3y^2\frac{dy}{dx}$

Solving for dy/dx: Addind x dy/dx both sides of the equation:

$-y-x\frac{dy}{dx}+x\frac{dy}{dx}=3y^2\frac{dy}{dx}+x\frac{dy}{dx} \\ -y=3y^2\frac{dy}{dx}+x\frac{dy}{dx}$

Common factor dy/dx on the right side of the equation:

$-y=(3y^2+x)\frac{dy}{dx}$

Dividing both sides of the equation by 3y^2+x:

$\frac{-y}{3y^2+x}=\frac{(3y^2+x)}{3y^2+x}\frac{dy}{dx}\\ -\frac{y}{3y^2+x}=\frac{dy}{dx}\\ \frac{dy}{dx}=-\frac{y}{3y^2+x}$

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3 years ago

Indicate whether each system of equations has no solution, one solution, or infinitely many solutions. y=2x+2y=2x+4

Gala2k [10]

Answer:

Step-by-step explanation:

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3 years ago

E. What is the median temperature for the data shown in the table?

Jlenok [28]

Step-by-step explanation:

Arrange the data in ascending order,

26.2° C

26.6° C

26.8° C

27.1° C

27.3° C

27.4° C

27.6° C

27.8° C

9 data items are there. Median temperature is 27.3° C

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3 years ago

PLEASE HELP! A student says that the measures of coterminal angles are never opposites of each other. Is the student correct? Ex

garri49 [273]

The student is not correct. For angles to be coterminal, the difference between their measures must be a multiple of 360°. The difference between 180° and –180° is 360°. Angles with measures 180° and –180° are coterminal.

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3 years ago

Read 2 more answers

For the function f(x)=(7-8x)^2, find f^-1 , determine if f^-1 is a function.

Ainat [17]

Answer:

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Step-by-step explanation:

bsbdbdbjddndndbdbdbdbdbdbdbdbsbdbdbbdbdbdbdbdbdbdbdbdbdndndn

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3 years ago