Question

#6.

Answer 1

Answer:

x = 2

Step-by-step explanation:

Since the triangles are similar then corresponding sides are in proportion, that is

$\frac{AB}{DE}$ = $\frac{BC}{EF}$ , substitute values

$\frac{7x}{7}$ = $\frac{4}{x}$ ( cross- multiply )

7x² = 28 ( divide both sides by 7 )

x² = 4 ( take square root of both sides )

x = $\sqrt{4}$ = 2