Answer: speed of the plane in still air is 84 mph; speed of the wind is 28 mph.
Step-by-step explanation:
Let s =speed of plane in still air
let w = speed of the wind
(s+w) = ground speed with wind
(s-w) = ground speed against the wind
Then, use a distance equation for each way. Note that
distance = speed × time
13(s+w) = 1456
26(s-w) = 1456
Divide the 1st equation by 13, and divide the 2nd equation by 26, we will have:
s + w = 112
s - w = 56
Using elimination method
2s = 168
s = 168/2
s = 84
s = 84 mph plane speed in still air
s + w = 112
84 + w = 112
Wind speed, w = 112 - 84 = 28mph
Answer:
15
Step-by-step explanation:
the answer is 15
Answer:
30 is the lcm
Step-by-step explanation:
Answer:
A. (1-,1)
How ?: Just plug in -1 in the x spot and 1 in the y spot on both sides... If answers are the same that’s the answer.
