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3 years ago

Find an explicit formula for the arithmetic sequence 170, 85, 0, -85

Mathematics

2 answers:

Sergeeva-Olga [200]3 years ago

7 0

The formula is y=85x because if you measure the distance between all the numbers you get 85.

tangare [24]3 years ago

4 0

Answer:

170-85(n-1)

Step-by-step explanation:

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Answer:

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the lowest number in negative form is considered the highest...hoped this helped!

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3 years ago

I desperately need help ILL GIVE BRAINLIEST AND 50 points

otez555 [7]

is this like Algebra 1 or 2? you can try to use a graph generator to help

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2 years ago

Help asap!!!!!

svetlana [45]

Answer:

12.5

68.5

Step-by-step explanation:

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2 years ago

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tatuchka [14]

It’s a positive correlation I’m pretty sure.

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3 years ago

) 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