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3 years ago

Solve for x need help asap

Mathematics

1 answer:

katrin2010 [14]3 years ago

3 0

Answer:

the answer is 23

Step-by-step explanation:

3x=69 ( vertically opposite angle)

x=69/3

x=23

Hope this helps. :)

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Find all local extrema for f(x, y) = 2y3 + 12x2 − 24xy. (if an answer does not exist, enter dne.) local minimum (x, y) = local m

OlgaM077 [116]

$f(x,y)=2y^3+12x^2-24xy$
Find the first derivatives:
$f'_x=24x-24y \\ f'_y=6y^2-24x$ .
Solve the system $\left \{ {{f'_x=0} \atop {f'_y=0}} \right.$ :
$\left \{ {{24x-24y=0} \atop {6y^2-24x=0}} \right. \rightarrow \left \{ {{x=y} \atop {6y^2-24y=0}}$ . The second equation has solutions $y_1=0, \\ y_2=4$ and then $x_1=0, \\ x_2=4$ and you have two points $A_1(0,0), \\ A_2(4,4)$ .

Find the first derivatives:
$f^{''}_{xx}=24 \\ f^{''}_{xy}=f^{''}_{yx}=-24 \\ f^{''}_{yy}=12y$ and calculate $\Delta=\left| \left[\begin{array}{cc}24&-24\\-24&12y\end{array}\right]\right |=24\cdot 12y-(-24)^2=288y-576$ .
Since $\Delta(A_1)=-576$ and $f^{''}_{xx}\ \textgreater \ 0$ , $A_1$ is a point of maximum and $f(0,0)=0$ .
Since $\Delta(A_2)=576$ and $f^{''}_{xx}\ \textgreater \ 0$ , $A_1$ is a point of minimum and $f(4,4)=-64$ .

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4 years ago

Solve the equation (1 +2)u, + uy - 0. 5

Kruka [31]

3u(uy-0.5)

Thats the answer

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3 years ago

Can you guys plz help me

lesya [120]

It should be B. 15.
I think ..

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3 years ago

50 POINTS!!! I WILL GIVE BRAINLIEST!!!!!

dedylja [7]

The equation would be worded as: 2m+16=36.

Solve! Using the subtraction property of equality, 2m=20. Then the division property of equality lets us figure out that m=10.

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4 years ago

Read 2 more answers

when a relation is drawn on an xy-plane what is another name for the set of all x values from its graph?

Galina-37 [17]

Another name for the set of all x-values for a relation is: domain.

<h3>What is the Domain of a Relation?</h3>

The domain of a relation can be defined as all the x-values that corresponds to the y-values that are plotted on a graph.

They are referred to as the input or the domain of the relation. Therefore, another name for the set of all x-values plotted for a relation on a graph is: domain.

Learn more about domain on:

brainly.com/question/26098895

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2 years ago