Ascale drawing uses the scale 1 in = 12 in. if a couch has a height of 32 inches and a length of 69 inches, what are its measurements on the scale drawing?

Height=  2.67 in.

Length = 5.75 in.

Step-by-step explanation:

Given : A scale drawing uses the scale 1 in = 12 in.

i.e. 1 in. of drawing = 12 in. of actual figure.

i.e. 1 in. of actual figure = of drawing.  (1)

For couch :

Height = 32 inches

Length = 69 inches

Then, the measurements on the scale drawing will be :-

Height=  (using (1))

Length =   (using (1))

Hence, the measurements of couch on the scale drawing:

Height=  2.67 in.

Length = 5.75 in.

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional