Suppose we are to construct a rectangular medical image whose perimeter is 30 cm. Let x and y be the length and the width of the image, respectively, with x > y. Let
be the ratio of the width y to the length x. Express the area A as a
function of the ratio r.

mxb67

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.

i'm not really sure how to answer that

step-by-step explanation: