In a scale drawing, the tength of a rectangular room is 6 inches, and the
width is 3 inches. The actual length of
the room is 18 feet.
a. What is the scale of the drawing?

b. In a new scale drawing of the same
room, the length of the room measures
4 inches. What is the scale of the new
drawing?

a) 1/36in.

b) 1/54in

Step-by-step explanation:

a) convert feet to inches:

L = 18ft = 216in

if length in image is 6in then 216in/6in. 36in is Scale.

width of original room = 108in.

check: 216*1/36 = 6

b) L = 18ft = 216in

216in/4in = 54in.

check: 216*1/54 = 4

i do not know this sorry : (

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)