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FrozenT [24]
3 years ago
11

PLS. I NEED HELP!! Solve for x

Mathematics
1 answer:
Julli [10]3 years ago
6 0

Answer:

5) D)

6) D)

7) A)

8) C)

Step-by-step explanation:

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Identify the terms and like terms in the expression.
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9x and 5x are "like terms."

9x - 5x produces the same result as does   -5x + 9x.
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4 years ago
Use implicit differentiation to find an equation of the tangent line to the curve at the given point. x2 + 2xy − y2 + x = 20, (3
marin [14]
\bf x^2+2x6-y^2+x=20\impliedby taking\ \cfrac{dy}{dx}\textit{ to both sides}
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\\\\\\
2\left[  x+\left( y+x\frac{dy}{dx}\right)-y\frac{dy}{dx}\right]=0
\\\\\\ x+y+x\frac{dy}{dx}-y\frac{dy}{dx}=0\impliedby \textit{common factor }\frac{dy}{dx}
\\\\\\
\cfrac{dy}{dx}(x-y)=-x-y\implies \cfrac{dy}{dx}=\cfrac{-x-y}{x-y}\qquad 
\begin{cases}
x=3\\
y=4
\end{cases}\ then
\\\\


\bf \cfrac{dy}{dx}=\cfrac{-3-4}{3-4}\implies \cfrac{dy}{dx}=7\\\\
-----------------------------\\\\
\textit{tangent equation at }\begin{cases}
x=3\\
y=4\\
m=7
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\\\\\\
y-4=7(x-3)\implies y=7x-21+4\implies y=7x-17
6 0
3 years ago
Number of Payphones
trapecia [35]

Answer:

B

Step-by-step explanation:

jUST DID IT

7 0
3 years ago
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3 years ago
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