An electrician earns 100 dollars for a project installing light fixtures. she must pay for the light fixtures herself and they cost 2 dollars and 50 cents each at the hardware store.
create an equation to represent her profit from the project. let x represent the number of light fixtures and y represent her total profit (the amount of money she has left over after paying for the light fixtures).

100 - 2.5x = y

Step-by-step explanation:

true

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.