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?
3.6 inches
18.2 inches
60 inches
90 inches

The length of the mural was 90 inches.

Step-by-step explanation:

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 18 inches long.

Let the length of the mural be x

the actual length of the mural = x = 18

                                             x   = 18 × 5

                                              x  = 90

The length of the mural was 90 inches.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

step-by-step explanation: