Pretty sure I can't give you test answers
The answer to this question would be
OPTION B.In a conjunction, / is true when both / and / are
TRUE; otherwise, / is
FALSE.
A conjunction refers to a compound statement, developed by combining two statement often through the use of the word '
AND'. For example, the two statements, 'Roses are Red' (statement
p) .... 'Violets are Blue' (statement
q), can be combined to form a conjunction that reads 'Roses are Red and Violets are Blue.' When it comes to conjunctions, it is or equivalent to the intersection of the two sets of statements (p and q → p ∩ q) which therefore means that
in order for the conjunction to be true, both statements must be true, otherwise, the conjunction is false.Attached below is a truth table that seeks to further explain the point (note: ^ represent the conjunction).
Answer:

Step-by-step explanation:
Distribute the 4

Subtract the 7

Subtract y and add 1
From the double-angle identity,

we can rewritte our given equation as:

By factoring 2cosx on the left hand side, we have

This equation has 2 solutions when

From equation (A), we obtain

and from equation (B), we have

On the other hand, we can find one more solution from the original equation by substituting x=0, that is,

then, x=0 is another solution. In summary, we have obtained the following solutions:

However, the intersection of the last set is empty. So the unique solution is x=0 as we can corroborate on the following picture:
Therefore, the solution set is: {0}
You have to do 200 divided by 20 your answer is ten