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Prove that "6^n + 9" is divisible by 5 for all natural numbers.

First assess that the initial case of where n = 1 is true. In this case, 6+9=15=53, so we can see that the case is true.We can then assume that 6k+9 is a multiple of 5, so we can let 6...

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Give the name and describe the process by which macrophages kill pathogens.

Phagocytosis. Macrophage picks up signals of pathogen, extends cytoplasm around pathogen and engulfs it in a vesicle. Lysosomes diffuse towards the vesicle through the cytoplasm, fuse and the (lytic) enzy...

Answered by Isabel B. Biology tutor
1895 Views

Explain what role nature plays in King Lear

Key advice for an answer:You must come up with a point/a line of argument: In King Lear, Shakespeare subverts ordinary early-modern views of hierarchy and natural order t...

Answered by English Literature tutor
3006 Views

You're writing an entry for a German blog about your school, respectively, your school life. Give a general description of your school. Write which subjects you like and which not. Write what you did in school yesterday/tomorrow.

I think it doesn't make sense for me to write down an answer to the question, therefore, I would rather say, what I think is the challenge the student has to deal with. In this example the student has to ...

Answered by Marvin S. German tutor
1592 Views

A curve C has equation: x^3+2xy-x-y^3-20=0. Find dy/dx in terms of x and y.

First we need to make sure we understand implicit differentiation. As we are differentiating with respect to x, y has to be treated differently, this is because it could be anything from a constant to a f...

Answered by Martin M. Maths tutor
5254 Views

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