If you scale up the ratio on the left, what will you get for the unknown quantity on the right? fraction numerator $ 115 over denominator 20 space hours end fraction equals fraction numerator $ 345 over denominator ? end fraction

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.

4+4+2x

or

2x+8

step-by-step explanation: