Answer:
7⁷
Step-by-step explanation:
a^(1/7) = 7
a = 7⁷
The answer should be
780x + 1500y=31000
please correct me if i'm wrong
29 because first u add 5 then 8 3 times.
Answer:
the like terms were not grouped together.
let the speed of plane in still air be x and that wind be y
therefore:
x+y=490
x-y=390
next we solve for the values of x and y, first we add the above equations. This will give us:
2x=880
x=880/2
x=440 miles per hour.
substituting the value of x in one of the equations and solving for y we get:
440+y=490
y=490-440
y=50 miles per hour