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alukav5142 [94]

3 years ago

6

Hey can someone please check my work? I want to make sure I get it right. Thanks.

1 answer:

adell [148]3 years ago

4 0

Yes... It is correct...

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Which points are separted <br><br> Giving brainliest

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Answer:

C :)

Step-by-step explanation:

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3 years ago

Please help me with this math

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Number 3: 176 squared cm

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3 years ago

Which shows two expressions that are equivalent to (-7)(-15)(-5)?

shusha [124]

B is the correct answer

C and D would be incorrect as 7 and 15 multiplies to 105 not 115
A is incorrect as -5 and -15 make a positive 75 not a negative 75

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4 years ago

In Exercises 3–10, use the Chain Rule to calculate the partial derivatives. Express the answer in terms of the independent varia

sashaice [31]

I'll use subscript notation for brevity, i.e.

$\dfrac{\partial f}{\partial x}=f_x$

3.

$f(x,y,z)=xy+z^2\implies\begin{cases}f_x=y\\f_y=x\\f_z=2z\end{cases}$

$x(r,s)=s^2\implies\begin{cases}x_r=0\\x_s=2s\end{cases}$

$y(r,s)=2rs\implies\begin{cases}y_r=2s\\y_s=2r\end{cases}$

$z(r,s)=r^2\implies\begin{cases}z_r=2r\\z_s=0\end{cases}$

By the chain rule,

$f_r=f_xx_r+f_yy_r+f_zz_r=2xs+4zr=2s^3+4r^3$

$f_s=f_xx_s+f_yy_s+f_zz_s=2ys+2xr=6rs^2$

4.

$x(r,s,t)=r+s-2t\implies\begin{cases}x_r=1\\x_s=1\\x_t=-2\end{cases}$

$y(r,s,t)=3rt\implies\begin{cases}y_r=3t\\y_s=0\\y_t=3r\end{cases}$

$z(r,s,t)=s^2\implies\begin{cases}z_r=0\\z_s=2s\\z_t=0\end{cases}$

By the chain rule,

$f_r=f_xx_r+f_yy_r+f_zz_r=y+3xt=3rt+3r+3s-6t^2$

$f_s=f_xx_s+f_yy_s+f_zz_s=y+4zs=3rt+4s^3$

$f_t=f_xx_t+f_yy_t+f_zz_t=-2y+3xr=3r+3s-12rt$

8 0

3 years ago

What is the answer to 16=d+3

Vlada [557]

Hello !!

$\rule{300}{5}$

$\huge\blue{\mid{\fbox{\tt{ANSWER:-\:}}\mid}}$

$d = 13$

<h2><em>EXPLANATION :</em></h2><h2><em /></h2>

Switch sides:

$16 = d~+~3$

Subtract 3 from both sides:

$d~+~3 ~-~3=16 ~-~3$

Simplify:

$d = 13$

$\huge\blue{\mid{\fbox{\tt{ANSWER:-\:}}\mid}}$

$d = 13$

Hope It Helps. . .

#LearnWithBrainly

$A~n~s~w~e~r~:$

Jace ^-^

7 0

3 years ago