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3 years ago

Someone pls help it’s a very short question!!! (dont judge me I forgot)

Mathematics

2 answers:

MArishka [77]3 years ago

7 0

Answer:

12.) 13 008 13.) 4 069 604

Slav-nsk [51]3 years ago

5 0

Answer:

12) 13008

13) 4069604

Step-by-step explanation:

Problem 12)

10000+ 3000 + 8 = 13008

Problem 13)

4 x 1000000 + 6 x 10000 + 9 x 1000 + 6 x 100 + 4 x 1 =

4000000 + 60000 + 9000 + 600 + 4 = 4069604

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Find the equation of the tangent of x^2- xy + y^2 =7 at (-1, 2)

Citrus2011 [14]

Answer:

It is 3y = 4x + 10

Step-by-step explanation:

Let's first get the slope of the curve.

[ slope is the derivative of the equation ]

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introduce dy/dx :

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make dy/dx the subject:

$2x - y - \frac{dy}{dx} + 2y \frac{dy}{dx} = 0 \\ \\ 2y \frac{dy}{dx} - \frac{dy}{dx} = y - 2x \\ \\ \frac{dy}{dx} (2y - 1) = y - 2x \\ \\ \frac{dy}{dx} = \frac{y - 2x}{2y - 1}$

At point (-1, 2):

$\frac{dy}{dx} = \frac{2 - 2( - 1)}{2(2) - 1} \\ \\ slope = \frac{4}{3}$

but a tangent has the same slope as the curve:

$y = mx + c$

m is the slope

c is the y-intercept

At (-1, 2):

$2 = ( - 1 \times \frac{4}{3} ) + c \\ \\ c = 2 + \frac{4}{3} \\ \\ c = \frac{10}{3}$

equation:

$y = \frac{4}{3} x + \frac{10}{3} \\ \\ { \boxed{3y = 4x + 10}}$

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3 years ago

Read 2 more answers

Can somebody please help

sdas [7]

Answer:

next row in the x column = 8

next row in the y column = 15

Step-by-step explanation:

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