Answer:
r = 225 Mil/h speed of the airplane in still air
Step-by-step explanation:
Then:
d is traveled distance and r the speed of the airplane in still air
so the first equation is for a 4 hours trip
as d = v*t
d = 4 * ( r + 25) (1) the speed of tail wind (25 mil/h)
Second equation the trip back in 5 hours
d = 5 * ( r - 25 ) (2)
So we got a system of two equation and two unknown variables d and
r
We solve it by subtitution
from equation (1) d = 4r + 100
plugging in equation 2
4r + 100 = 5r - 125 ⇒ -r = -225 ⇒ r = 225 Mil/h
And distance is :
d = 4*r + 100 ⇒ d = 4 * ( 225) + 100
d = 900 + 100
d = 1000 miles
Answer:
¡Espero que esto ayude!
:)
Step-by-step explanation:
1) 19 grados
2) 98 grados
3) 44 grados
4) 93 grados
5) 122 grados
6) 125 grados
7) 140 grados
8) 66 grados
9) 118 grados
10) 144 grados
Answer:
(7/4)(2)(2)=7
Step-by-step explanation:
Hope this helps you and good-luck
Answer: 1/16
0.0625
Step-by-step explanation:
