On a blueprint with a scale of 1 cm = 4ft, the length of the wall is 9 cm. if the scale of the blueprint were 1 cm = 3 ft, what would be the length of the wall? plz show work and explain your work.

a. 12 cm
b. 13 cm
c. 15 cm
d. 18 cm

I'd say it's A because you multiply the 4 ft by 3 ft and you'll get 12 ft.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x