Problem 7. suppose 2/3 of adults ride bicycles everyday for exercise (a) state the complement of the following event:
* At least one of the 6 randomly selected adults rides a bicycle everyday.
b) Find the probability that at least one of the 6 randomly selected adults
rides a bicycle everyday

the anwser is d) 75°

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.

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step-by-step explanation: