Brianna went on a trip to the art museum and sketched a scale drawing of a rectangular wall mural. She used a scale factor of 0.2. The sketch was 12 inches wide and 18 inches long. What was the length of the mural?

Respuesta :

Answer:

The length of the mural was 90 inches

Step-by-step explanation:

The scale is the relationship that exists between the magnitudes of a drawing and the actual dimensions. This is:

[tex]scale factor=\frac{drawing length}{actual length}[/tex]

scale factor = Drawing length /Actual length

In this case, you have that:

  • scale factor= 0.2
  • drawing length= 18 inches

So:

[tex]0.2=\frac{18 inches}{actual length}[/tex]

Solving this, you get:

[tex]actual length=\frac{18 inches}{0.2}[/tex]

actual length=90 inches

So, the length of the mural was 90 inches

Answer: D 90 inches

Step-by-step explanation: