3(x−1) = 27
I need the answer

You need to isolate/get the variable "x" by itself in the equation:

3(x - 1) = 27        First divide 3 on both sides

x - 1 = 9     Add 1 on both sides to get "x" by itself

x - 1 + 1 = 9 + 1

x = 10

PROOF

3(x - 1) = 27     Substitute/plug in 10 for "x"

3(10 - 1) = 27

3(9) = 27

27 = 27

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.

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula