Answer:
Step-by-step explanation:
If v = plane velocity and c = air current, then:
v + c = 480
v - c = 400
2v = 880
v = 440
The plane's velocity in still air would be 440 miles per hour.
Answer: The cost per donut is 0.45
Step-by-step explanation: A dozen donuts is 12 donuts. $5.40 dollars divided by 12 is 0.45.
Answer: x3+2x+3
Step-by-step explanation:
Marcia can make 51 centerpieces with 4 flowers left over