Question

Question #81df4

Answer 1

`color(blue)(x = 6z`

Explanation:

Given, `AC = 7x, EC = 21z`

AC is a diagonal and E is it’s midpoint.

We know, AE = EC = AC / 2#

`:., AC = 7x = 2 * EC = 2 * 21z = 42 z`

`7x = 42 z`

`x = (42 z) / 7 = 6z`