Question

.-.

Answer 1

it's a practice question. i'm supposed to know how to do this after reading the lesson, but i have failed to understand. please explain :)

Answer 2

@hartnn

Answer 3

somebody T-T

Answer 4

ok..lemme see here if i can help myself...

Answer 5

d1 = (r + 40)(5)
d1 = 5r + 200

d2 = (r - 40)(6)
d2 = 6r - 240

is this looking right so far??

Answer 6

d1 = d2

Answer 7

5r + 200 = 6r - 240
5r = 6r - 440
-r = -440
r = 440?

Answer 8

so it would be traveling at 440 mph?

Answer 9

Same with mine :)
It's the speed of plane in the still air !

Answer 10

WOOHOO!

Answer 11

thanks :)

Answer 12

@AriPotta Look like without my help, you eventually can get it yourself ;)

Answer 13

EVENTUALLY

Answer 14

would you be here for me for the other ones too? there's 4 more :x

Answer 15

Okie, open the new post! I'll follow up :)

Answer 16

ok, one sec. gotta write this down :o