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deff fn [24]
3 years ago
13

Tomi's band has won twice as many awards as All's band. Write an algebralc expression for the number of awards Tomi's band has w

on. Be sure to indicate what the variable in your expression represents​
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
5 0

Given problem;

  Write and algebraic expression for the number of awards Tomi's band has won;

   Let the number of award Tomi's band has won = T

   Let the number of award All's band has won  = A

We know;

      Tomi's band has won twice as many awards as All's band.

       T = 2 x A

  T  = 2A

The algebraic expression is T = 2A

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Answer:

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Step-by-step explanation:

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2 years ago
Find the work done by F= (x^2+y)i + (y^2+x)j +(ze^z)k over the following path from (4,0,0) to (4,0,4)
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\vec F(x,y,z)=(x^2+y)\,\vec\imath+(y^2+x)\,\vec\jmath+ze^z\,\vec k

We want to find f(x,y,z) such that \nabla f=\vec F. This means

\dfrac{\partial f}{\partial x}=x^2+y

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f(x,y,z)=e^z(z-1)+g(x,y)

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x^2+y=\dfrac{\partial g}{\partial x}

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y^2+x=x+\dfrac{\mathrm dh}{\mathrm dy}\implies\dfrac{\mathrm dh}{\mathrm dy}=y^2\implies h(y)=\dfrac{y^3}3+C

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\boxed{f(x,y,z)=e^z(z-1)+\dfrac{x^3}3+xy+\dfrac{y^3}3+C}

By the fundamental theorem of calculus, the work done by \vec F along any path depends only on the endpoints of that path. In particular, the work done over the line segment (call it L) in part (a) is

\displaystyle\int_L\vec F\cdot\mathrm d\vec r=f(4,0,4)-f(4,0,0)=\boxed{1+3e^4}

and \vec F does the same amount of work over both of the other paths.

In part (b), I don't know what is meant by "df/dt for F"...

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\displaystyle\int_{L_1}\vec F\cdot\mathrm d\vec r=f(0,0,0)-f(4,0,0)=-\frac{64}3

\displaystyle\int_{L_2}\vec F\cdot\mathrm d\vec r=f(4,0,4)-f(0,0,0)=\frac{67}3+3e^4

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Answer:

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Answer:

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a -6=36b=2a

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

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