Aboard 12 3 4 feet long is cut so that 9 7 8 feet are left. what length of the board was cut off? a) 2 1 2 ft b) 2 7 8 ft c) 3 1 2 ft d) 3 7 8 ft

B 2 7/8

Step-by-step explanation:

12 3/4 - 9 7/8 = 2 7/8

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.

in english this is

ex.15 pag.85 create. write in ten lines the continuation of the ballad of the five motanasi, using verbs to the imperfect and to the perfect compound. five stars

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