He wants to change the misconception that most slaves sing their lungs out because they feel happy.
Olá. Você não mostrou o texto ao qual essa pergunta se refere, o que torna impossível que ela seja respondida corretamente. Entretanto, eu vou tentar te ajudar da melhor forma possível, te mostrando como são verbos no simple past.
Verbos no simple past são aqueles que estão acompanhados pelo verbo auxiliar "did", ou, finalizam-se com a sílaba –ed, –ied ou –d. Como exemplo, podemos citar os verbos: danced, planed, walked, looked, dentre outros.
A call to action is a question or statement designed to provoke the reader into doing, supporting, or participating in something.
An appositive phrase gives information, and has commas on either side.
Here is an example of an appositive phrase.
My friend, a college student, has a lot of work to do.
From this you should be able to find out that this one has an appositive.
<span>Tiger sharks, which are voracious eaters, eat fish, seals, birds, and even old tires.</span>
I have this solution this solution here which has radius 2 instead of 4. Hope this might help.
y=(4-x^2)^(1/2) is the outer radius of the surface of revolution
<span>y=1 this is the inner radius of the surface of revolution </span>
<span>Now we need to know the interval of integration... </span>
<span>(4-x^2)^(1/2)=1 </span>
<span>4-x^2=1 </span>
<span>x^2-3=0, x=±√3 </span>
<span>V=p⌠f(o)^2-f(i)^2 dx </span>
<span>V=p⌠4-x^2-1 dx </span>
<span>V=p(3x-x^3/3) </span>
<span>V=(p/3)(9x-x^3), x=[√3, -√3] </span>
<span>V=(p/3)((9√3-3√3)-(-9√3+3√3)) </span>
<span>V=(p/3)(6√3+6√3) </span>
<span>V=(p/3)(12√3) </span>
<span>V=4p√3 </span>
<span>What has happened is that you have essentially removed a cylindrical tube with convex ends matching the curvature of the outer sphere...it isn't pretty, that's why we needed to use revolutions of solids to figure it out...It would be extremely difficult to figure this out otherwise...</span>