Prove that the given argument is valid. first find the form of the argument by defining predicates and expressing the hypotheses and the conclusion using the predicates. then use the rules of inference to prove that the form is valid. (a) the domain of discourse is the set of musicians in an orchestra. everyone practices hard or plays badly (or both). someone does not practice hard. someone plays badly

bachs minuet in d minor is from the baroque period.

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step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.