Answer:
- plane: 550 mph
- wind: 50 mph
Step-by-step explanation:
If p and w represent the speeds of the plane and wind, respectively, the speed into the wind is ...
p - w = (3000 mi)/(6 h) = 500 mi/h
And, the speed with the wind is ...
p + w = (3000 mi)/(5 h) = 600 mi/h
Adding these two equations gives us ...
2p = 1100 mi/h
p = 550 mi/h . . . . . . . divide by 2
Then the wind speed is ...
w = 600 mi/h - p = (600 -550) mi/h
w = 50 mi/h
The rate of the plane in still air is 550 mi/h; the rate of the wind is 50 mi/h.
The last one because the other ones only go to the positive side and not the negative too since the cube root
Answer:
1 5/12
Step-by-step explanation:
find the common factor of the denominators (3 and 4) which is 12 then just multiply the 2 in 2/3 by 3 since 12 is the third common factor for 3 and you do the same thing with 3/4, multiply the 3 by 3. then you add 8/12 + 9/12 to get 17/12 then 17 goes into 12 once plus 5 left over so as a mixed number its 1 5/12