Three of four numbers have a sum of 22. if the average of the four numbers is 8, what is the fourth number? a) 4 b) 6 c) 8 d) 10

10

Step-by-step explanation:

First you do 8 × 4, this gives the total of the four numbers.

Then, subtract the total of 3 of the numbers from the total of 4 of the numbers.

idk

step-by-step explanation:

use that smart brain

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.