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TiliK225 [7]
3 years ago
11

I need help in learning how to solve this equation using substitution:

Mathematics
1 answer:
Tomtit [17]3 years ago
4 0

Answer:

x=3, z=-1, y=6

Step-by-step explanation:

you need to make the coefficients of each variable equal to each other then subtract 2 equations.

this one: multiply -4 in 1st

4x+4y+4z=32

-4x+4y+5z=7

_____________

8x+0-z=25

we have 2 equations with 2 variables now

2x+2z=4

8x-z=25

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In this situation, you have:
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Find dydx for xy+x+y=6. Differentiate both sides of the equation with respect to x, and then solve for dydx. Do not substitute f
velikii [3]

Answer:

\frac{dy}{dx}=-\frac{y+1}{x+1}

Step-by-step explanation:

The given equation is xy+x+y=6

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x\frac{dy}{dx}+y+1+\frac{dy}{dx}=0

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x\frac{dy}{dx}+\frac{dy}{dx}=-y-1

Factor out dy/dx from the left hand side of the equation

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

Divide both sides by (x+1)

\frac{dy}{dx}=\frac{-y-1}{x+1}\\\\\frac{dy}{dx}=-\frac{y+1}{x+1}

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3 years ago
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Andre45 [30]

Answer:

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Step-by-step explanation:

km-m-cm-mm(order of units)

5 0
3 years ago
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If u could show me how to solve these I would appreciate it
Sveta_85 [38]

Answer:

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4 years ago
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