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2 years ago

А,

Mathematics

2 answers:

alekssr [168]2 years ago

4 0

Answer:

In Triangle FGH, m<F = 42 and an exterior angle at vertex H as a measure of 104. What is the measure of <G?

Step-by-step explanation:

Over [174]2 years ago

3 0

Answer:

82 units

Step-by-step explanation:

look at the paper...

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The radius of a circle is 6 yards. What is the circle's circumference? Use 3.14 for .

Orlov [11]

Answer:

18.84

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sorry if i get the wrong answer i literlly learn this but i complety forget it

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3 years ago

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Today there is a 60 % of rain. What is the chance that they win their game today?

Jlenok [28]

75 give or take a few percent

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Percy plotted the points (5,6)

Annette [7]

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1,6 and 6,6

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since they are on the same y-axis, changing the x-value shouldn't matter.

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3 years ago

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Suppose that surface σ is parameterized by r(u,v)=⟨ucos(3v),usin(3v),v⟩, 0≤u≤7 and 0≤v≤2π3 and f(x,y,z)=x2+y2+z2. Set up the sur

Bad White [126]

Looks like you have most of the details already, but you're missing one crucial piece.

$\sigma$ is parameterized by

$\vec r(u,v)=\langle u\cos3v,u\sin3v,v\rangle$

for $0\le u\le7$ and $0\le v\le\frac{2\pi}3$ , and a normal vector to this surface is

$\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}=\left\langle\sin3v,-\cos3v,3u\right\rangle$

with norm

$\left\|\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}\right\|=\sqrt{\sin^23v+(-\cos3v)^2+(3u)^2}=\sqrt{9u^2+1}$

So the integral of $f(x,y,z)=x^2+y^2+z^2$ is

$\displaystyle\iint_\sigma f(x,y,z)\,\mathrm dA=\boxed{\int_0^{2\pi/3}\int_0^7(u^2+v^2)\sqrt{9u^2+1}\,\mathrm du\,\mathrm dv}$

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3 years ago

Place the following objects in order from greatest to least gravitational force. Explain your answer.

kozerog [31]

well when thinking of gravity you have to think of the size and mass of the object so,

The sun (largest and most mass)

Earth

Earth's moon

Discover satellite (cause it's tiny and light compared to the sun!)

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3 years ago