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Marta_Voda [28]

3 years ago

6

Which is the correct answer?

1 answer:

mel-nik [20]3 years ago

7 0

Answer:

The first one

Step-by-step explanation:

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Does the following table show a proportional relationship between the variables xxx and yyy?

Eva8 [605]

Answer:

Yes

Step-by-step explanation:

It's right

7 0

3 years ago

Read 2 more answers

What’s this answer ? Please help!

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

10 + 4 + 4 + 5 + 10 + 6 + 6 +2 + 2 or multiply them like this.

8 0

3 years ago

Find the surface area of a cylinder with a height of 4 yd and a base radius of 3 yd.

ad-work [718]

Answer:

131.95yd squared

Step-by-step explanation:

A=2πrh+ 2 r(2)=2*π*3*4+2*π*3(2)~131.94689yd(2)

5 0

3 years ago

(a)5%)Let fx, y) = x^4 + y^4 - 4xy + 1. and classify each critical point Find all critical points of fx,y) as a local minimum, l

lara31 [8.8K]

$f(x,y)=x^4+y^4-4xy+1$

has critical points wherever the partial derivatives vanish:

$f_x=4x^3-4y=0\implies x^3=y$

$f_y=4y^3-4x=0\implies y^3=x$

Then

$x^3=y\implies x^9=x\implies x(x^8-1)=0\implies x=0\text{ or }x=\pm1$

If $x=0$ , then $y=0$ ; critical point at (0, 0)
If $x=1$ , then $y=1$ ; critical point at (1, 1)
If $x=-1$ , then $y=-1$ ; critical point at (-1, -1)

$f(x,y)$ has Hessian matrix

$H(x,y)=\begin{bmatrix}12x^2&-4\\-4&12y^2\end{bmatrix}$

with determinant

$\det H(x,y)=144x^2y^2-16$

At (0, 0), the Hessian determinant is -16, which indicates a saddle point.
At (1, 1), the determinant is 128, and $f_{xx}(1,1)=12$ , which indicates a local minimum.
At (-1, -1), the determinant is again 128, and $f_{xx}(-1,-1)=12$ , which indicates another local minimum.

4 0

3 years ago

What is the length of Line segment A B? Round to the nearest tenth. Triangle A B C is shown. Angle A C B is a right angle and an

Amiraneli [1.4K]

Answer:

D.) 38.6 m

Step-by-step explanation:

Use the cosine ratio:

$cosine=\frac{adjacent}{hypotenuse}$

Because we are given the measure of an angle and the length next to it (adjacent), and we need to find the hypotenuse (the hypotenuse is NEVER considered the adjacent side). Insert the values:

$cos75=\frac{10}{x}$

Now isolate the variable. Multiply both sides by x:

$x(cos75)=x(\frac{10}{x} )$

The x's on the right side cancel each other out. Simplify:

$x*cos75=10$

Now divide both sides by cos75°:

$\frac{x*cos75}{cos75} =\frac{10}{cos75}$

The cos75° on the left side cancels each other. Simplify:

$x=\frac{10}{cos75}$

Insert this value into a calculator to simplify the value of x:

$x=38.6$

The hypotenuse is 38.6 m.

:Done

3 0

3 years ago