Alice and Dave left school at the same time walking in opposite directions. Alice walked at an average speed of 280 ft/min and Dave walked at an average speed of 320 ft/min. b How far apart were they in 5 minutes? They were feet far apart in 5 minute.

They were 3000 feet far apart in 5 minute

Step-by-step explanation:

After leaving school, Alice walked at an average speed of 280 ft/min.

Distance = speed × time

Distance covered by Alice after 5 minutes is

280 × 5 = 1400 feet

Dave walked at an average speed of 320 ft/min. Distance covered by Dave after 5 minutes is

320 × 5 = 1600 feet

Total distance covered by Alice and Dave after 5 minutes is

1400 + 1600 = 3000 feet

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this