Answer:
...
against the wind, an airplane travels 3640 km in 7 hours.
with the wind, the same plane travels 6000 km in 6hrs.
...
let speed of plane in still air be x mph
speed of wind be y mph.
..
t=d/r
..
against wind speed = x-y mph
with wond speed = x=y mph
...
3640/(x-y)=7
3640 = 7x-7y
/7
520=x-y.....................1
...
6000/x+y = 6
6000 = 6x+6y
/6
1000=x+y.....................2
...
Add (1) & (2)
2x=1520
/2
x=760 mph speed of plane in still air
...
plug value of x in 2
1000=760+y
100-760=y
240 = y
240 mph speed of wind
Answer:
There are 200 trees per acre.
Step-by-step explanation:
47000 trees divided by 235 acres gets you 200 trees per acre.
When you go back and check your work, 200 trees per acre times 235 acres equals 47000 trees.
I hope this helps! :)
<u>Supplementary:</u> N and M
Supplementary angles: A pair of angles whose sum is equal to 180°.
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<u>Vertical:</u> N and R
Vertical angles: A pair of opposite angles that are made by two intersecting lines.
<u>Complimentary:</u> P and Q
Complimentary angles: A pair of angles whose sum is equal to 90°.
Hope this helps! :D
Can you be more specific?
Answer:
x = 4
Step-by-step explanation:
6^5x-4=6^4x
6^ (5x-4) = 6^ (4x)
Dividing through by 6
5x - 4 = 4x
Collecting Like Terms
5x - 4x = 4
x = 4
