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jok3333 [9.3K]
3 years ago
12

What is the scale factor from Figure 2 to Figure 1?

Mathematics
1 answer:
Luda [366]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Each of the lines lengths multiply by 3.

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Heeelp!!!!! Will mark brainliest.
telo118 [61]

Answer:

y=2x

Step-by-step explanation:

6 0
4 years ago
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Use the Chain Rule to find the indicated partial derivatives. z = x^4 + xy^3, x = uv^4 + w^3, y = u + ve^w Find : ∂z/∂u , ∂z/∂v
k0ka [10]

I'll use subscript notation for brevity, i.e. \frac{\partial f}{\partial x}=f_x.

By the chain rule,

z_u=z_xx_u+z_yy_u

z_v=z_xx_v+z_yy_v

z_w=z_xx_w+z_yy_w

We have

z=x^4+xy^3\implies\begin{cases}z_x=4x^3+y^3\\z_y=3xy^2\end{cases}

and

\begin{cases}x=uv^4+w^3\\y=u+ve^w\end{cases}\implies\begin{cases}x_u=v^4\\x_v=4uv^3\\x_w=3w^2\\y_u=1\\y_v=e^w\\y_w=ve^w\end{cases}

When u=1,v=1,w=0, we have

\begin{cases}x(1,1,0)=1\\y(1,1,0)=2\end{cases}\implies\begin{cases}z_x(1,2)=12\\z_y(1,2)=12\end{cases}

and the partial derivatives take on values of

\begin{cases}x_u(1,1,0)=1\\x_v(1,1,0)=4\\x_w(1,1,0)=0\\y_u(1,1,0)=1\\y_v(1,1,0)=1\\y_w(1,1,0)=1\end{cases}

So we end up with

\boxed{\begin{cases}z_u(1,1,0)=24\\z_v(1,1,0)=60\\z_w(1,1,0)=12\end{cases}}

3 0
3 years ago
Solve the system of equations. (HINT: use the elimination method)<br> 7x+4y=2<br> 9x-4y=30
igor_vitrenko [27]

Answer: 7x + 4 y = 2

9x - 4y= 30

-------------------

16x / = 32

x= 32:16

x=2

Step-by-step explanation: 7x+4y=2

7*2 + 4y=2

14 +4y=2

4y= 2-14

4y= -12

y= -12 : 4

y= - 3

4 0
3 years ago
Abby sold half of her comic books and then bought seventeen more. She now has 32. With how many did she begin?
Art [367]

Answer:

15 because 32 - 17 = 15

Step-by-step explanation:

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3 years ago
PLEASE HELP! WILL MARK BRAINLIEST!!!
alina1380 [7]

I think the answer is B

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3 years ago
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