Let E denote a bounded, nonvoid set of real numbers. Define cos(E) to be the image of the set E under the cosine function, that is, True or false: True False cos(E)= {cos(x) : x = E}. sup(cos(E)) = cos(sup E).

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A: Firstly, we add 500/85 on both sides  and then by adding 2+500/85, we get the required result.

A: Topic:- algebra

A: according to our guidelines we can answer only three subparts, or first question and rest can be…

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A: we first distribute the equation, Then combine like term on same side.

A: We can solve the quinary number system problem as below.

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A: Given query is to find the value of x.

A: Given the equation  x5 + 17 = 35 We need to solve it. Now, x5 + 17 = 35 implies that  x5 = 35 - 17…