Explain how to use prope Explain how to use properties to prove d + (8d + 1) + 7 is equivalent to 8 + 9d. rties to prove d + (8d + 1) + 7 is equivalent to 8 + 9d. HU 20 POOOIINNNTTSS

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

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.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}