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3 years ago

Under what operation are the set of integers closed? Explain your answer

Mathematics

2 answers:

aksik [14]3 years ago

6 0

Answer:

a set of integers is closed under addition, subtraction, and multiplication because when you add, subtract, or multiply any integers, the result is always an integer.

Step-by-step explanation:

torisob [31]3 years ago

3 0

The set of integers is closed under addition, subtraction, and multiplication because when i add, subtract, or multiply any integers, the result is always an integer.

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What’s the slope of a line that’s perpendicular to y = 2 x + 7

Zina [86]

Answer:The slopw is -1/2

Step-by-step explanation

A slope that is a opposite reciprocal of another slope is always perpendicular. Make sure it is a opposite reciprocal. Not just a regular reciprocal.

8 0

3 years ago

Is -18x - 7 equal to -6(3x - 7)?

adoni [48]

Answer:

Step-by-step explanation:

-18-7 is not equal to -6(3x-8) beacuse

-6(3x-8)= -18x+42

its obivous that the two values are not same

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3 years ago

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Use Green's Theorem to calculate the circulation of F =2xyi around the rectangle 0≤x≤8, 0≤y≤3, oriented counterclockwise.

Tamiku [17]

Green's theorem says the circulation of $\vec F$ along the rectangle's border $C$ is equal to the integral of the curl of $\vec F$ over the rectangle's interior $D$ .

Given $\vec F(x,y)=2xy\,\vec\imath$ , its curl is the determinant

$\det\begin{bmatrix}\frac\partial{\partial x}&\frac\partial{\partial y}\\2xy&0\end{bmatrix}=\dfrac{\partial(0)}{\partial x}-\dfrac{\partial(2xy)}{\partial y}=-2x$

So we have

$\displaystyle\int_C\vec F\cdot\mathrm d\vec r=\iint_D-2x\,\mathrm dx\,\mathrm dy=-2\int_0^3\int_0^8x\,\mathrm dx\,\mathrm dy=\boxed{-192}$

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3 years ago

Please help me simplify 4^8/4^5

Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

Hope it helped!

4 0

3 years ago

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What’s the answer for #11 @HavannaS? Spent 20 min and clueless, thank you!!!!!!

Elis [28]

Angle 2=3, so angle 1=4 because angles ABC & BCD equal 90°. When you add together the angles of a triangle you get 180 and if you could put angle 1 and 4 together it would look like an upward version.

That is the best way I could describe it. Hope that helps.

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3 years ago