How would I know which ones they are...? plz give a detail explanation

rational

Step-by-step explanation:

this is because it can be expressed as quotient of two integers:77÷1

rational

Step-by-step explanation:

because square root of 77 is not a perfect square so you have to square root it and you'll get a decimal as your answer

the answer will be

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.