Tell whether the two rates form a proportion 1.) 75 miles in 3 hours; 140 miles in 4 hours
2.) 12 gallons in 4 minutes; 21 gallons in 7 minutes
3.) 150 steps in 50 feet; 72 steps in 24 feet
4.) 3 rotations in 675 days; 2 rotations in 730 days

1. Yes

2. Yes

3. Yes

4. No

Step-by-step explanation:

1.) 75 miles in 3 hours; 140 miles in 4 hours (no)

2.) 12 gallons in 4 minutes; 21 gallons in 7 minutes (yes)

3.) 150 steps in 50 feet; 72 steps in 24 feet (yes)

4.) 3 rotations in 675 days; 2 rotations in 730 days (no)

Step-by-step explanation:

when in fraction form you cross multiply

12/4=21/7

21*4=12*7

84=84

150/50=72/24

150*24= 50*72

3,600=3,600

b

step-by-step explanation:

the word superfluous means unnecessary

i got 10.28 but that rounds up to 10.3