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3 years ago

5

Select whether the situation represents a direct variation or an inverse variation.You buy some chicken for $1.79/lb a. direct v

araition b. inverse varaition

1 answer:

Grace [21]3 years ago

4 0

That would be a direct varation.

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) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle

Fynjy0 [20]

The surface (call it $S$ ) is a triangle with vertices at the points

$x=0,y=0\implies z=2\implies(0,0,2)$

$x=0,y=2\implies z=-2\implies(0,2,-2)$

$x=2,y=0\implies z=-8\implies(2,0,-8)$

Parameterize $S$ by

$\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)$

with $0\le u\le1$ and $0\le v\le1$ . Take the normal vector to $S$ to be

$\vec s_v\times\vec s_u=(20v,8v,4v)$

Then the flux of $\vec F$ across $S$ is

$\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^1\int_0^1(6-6v,2v-2uv,-8+6v+4uv)\cdot(20v,8v,4v)\,\mathrm du\,\mathrm dv$

$=\displaystyle8\int_0^1\int_0^1(11v-10v^2)\,\mathrm du\,\mathrm dv=\boxed{\frac{52}3}$

8 0

3 years ago

Find the slope and the y-intercept of the graph of y=6x – 5.

dolphi86 [110]

Answer:

y intercept is -5 and slope is 6/1

Step-by-step explanation:

3 0

3 years ago

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Please help i dont wanna fail this time

mezya [45]

Answer:

Step-by-step explanation:

So...

you would add -4 and -2 1/2 giving the total of -6 1/2.

All thats left is for you to graph it:)

(Please mark brainliest)

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3 years ago

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Use a ladder diagram to find the prime factorization of 64 i need answer quick

choli [55]

Answer:

2^5

Step-by-step explanation:

64 = 2*16 = 2*2*8 = 2*2*2*4 = 2*2*2*2*2 = 2^5

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3 years ago

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——————————————————————————————

DochEvi [55]

4. 3(3) + 2
(3 x 3) + 2 = 11
5. -(-6) -7
(+)6 -7 = -1

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3 years ago