After you add both sides by 9. how can you solve for 5z in this equation?
5z– 3 = 12

divide both sides by positive 5

multiply both sides by positive 5

multiply both sides by positive 3

divide both sides by positive 3

The correct answer is A. Divide both sides by positive 5

Step-by-step explanation:

Let's solve the equation for finding z and the necessary steps to do it:

5z - 3 = 12

5z = 12 + 3 (Adding 3 at the right side and subtracting 3 at the left side)

5z = 15 (Adding 12 plus 3 at the right side)

5z/5 = 15/5 (Dividing by positive 5 at both sides)

z = 3

The correct answer is A. Divide both sides by positive 5

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

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.