After receiving his allowance, spencer spent half of it on a mother’s day card. he bought two toy cars for $.49 each to give to his brothers, and a pack of gum for $.35. how much did spencer receive for his allowance if $.42 is left over? ( give equation and answer)

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.

$452.90 because you needed to round to the nearest cent