Explain to me what a proportion is

its a fraction but you use proportions to find x

for example :

2 ×

- -

3 2

Step-by-step explanation:

you multiply cross so then you divide that by your other number

the discriminant is 64 + 4*1*12 = 112

this is prime.

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.