Respuesta :

MathPhys

Answer:

9

Step-by-step explanation:

The small triangle on the left, the larger triangle on the right, and the overall triangle all have the same angles, and therefore are similar.

Writing a proportion:

4 / 6 = 6 / a

a = 9

CharlieBrown2002

Answer:

C. 9 (third option)

Step-by-step explanation:

A proportion sets two ratios equal to each other.

For example of proportion: ⇒ [tex]x*6=y[/tex]

Another example of proportion: ⇒ [tex]\frac{y}{x}=\frac{6\div 2}{2\div2}=\frac{3}{1}=3[/tex]

6/4=4/a

=9 is the correct answer.

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