Question

Please Help I Don't Understand

Answer 1

Let's see

$\\ \rm\Rrightarrow \dfrac{8}{10}=\dfrac{72}{x}$

$\\ \rm\Rrightarrow \dfrac{4}{5}=\dfrac{72}{x}$

$\\ \rm\Rrightarrow 4x=360$

$\\ \rm\Rrightarrow x=90$

Answer 2

Answer:

90

Step-by-step explanation:

The angles are on either side of the line are in proportion.

Hence,

⇒ $\frac{10}{8} = \frac{x}{72}$

⇒ $\frac{5}{4} = \frac{x}{72}$

⇒ $x = \frac{5 \times 72}{4}$

⇒ $x = 5 \times 18$

⇒ x = 90