HELP!!! WILL MARK BRAINLIEST 20 POINTS!!

Mathematics

1 answer:

BigorU [14]3 years ago

7 0

Answer:

Step-by-step explanation:

look at both of the point on the picture. we have (-3,6) at (5,0) by the axis right. in the picture we have Y axis and X axis go from 1 to 6. to the + go down to the - right. you need the point and count the line is on the axis. will you get your question right.

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Multiply. –58.7 • 13 Divide. -6 ÷ 1/4

Vitek1552 [10]

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3 years ago

Implicit differentiation of 1/x +1/y=5 y(4)= 4/19 y'(4)=?

Aneli [31]

$\frac{1}{x} +\frac{1}{y} = 5\\\\x^{-1}+y^{-1}=5\\$

Above, I changed the fraction form of x and y into exponential form so it is easier to see the differentiation. Now, we can differentiate:

$-1x^{-2}+-1y^{-2}\frac{dy}{dx}=5\\\\\frac{-1}{x^2}-\frac{1}{y^2}\frac{dy}{dx}=5\\\\-\frac{1}{y^2}\frac{dy}{dx}=5+\frac{1}{x^2}\\\\\frac{dy}{dx}=-5y^2-\frac{y^2}{x^2}$

Now that we have dy/dx, we can plug in the x, which is 4, and the y, which is 4/19. We know these values of x and y because your question stated y(4) = 4/19.

$\frac{dy}{dx}=-5(\frac{4}{19})^2-\frac{(\frac{4}{19})^2}{(4)^2}\\\\\frac{dy}{dx}=-5(\frac{16}{361})-\frac{(\frac{16}{361})}{16}\\\\\frac{dy}{dx}=\frac{-80}{361}-\frac{1}{361}\\\\\frac{dy}{dx}=\frac{-81}{361}$

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3 years ago

A1 = 7 and r = 5 I need this please

Sloan [31]

A=7 is what I got since this was a equation problem

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3 years ago

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Kobotan [32]

Answer:

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Step-by-step explanation:

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3 years ago

G. r. a. p. h. 24x-6y=18.

FinnZ [79.3K]

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2 years ago