Posted by Nicole C. on Tuesday, February 3, 2009 at 9:21pm.
Sorry but we never learned that kind of math I wished I could help you I read all the instructions I know math, but not that kind. I'm sorry.
its alright, I don't get much myself...even after going through this about 4 months ago. thank you for trying!
Another problem that I have that includes the same directions are:
A plane leaves Lignoier Airport and travels west at 230 mph. A second plane leaves 3 hours later and travels east at 215 mph. How long has each plane flown when the two planes are 1135 miles apart?
Please Help me!!!! This is due tomorrow (our teacher gives us one night to do it) and I'm confused and I don't know what to do about it!
Nicole, re your first question
In your chart, in the row "with the wind"
fill in D as 1200, R as x+y, and T as 4
in the row "against the wind", fill in
D = 500, R = x-y, and T = 2
from first row: 1200 = 4(x+y)
4x + 4y = 1200
x + y = 300 (#1)
from second row: 500 = 2(x-y)
2x - 2y = 500
x - y = 250 (#2)
add #1 and#2 ----> 2x = 550
x = 275
sub into #1 275 + y = 300
y = 25
"A plane leaves Lignoier Airport and travels west at 230 mph. A second plane leaves 3 hours later and travels east at 215 mph. How long has each plane flown when the two planes are 1135 miles apart?
form two rows in your chart:
first: going west
second: going east
Going West: T = t hours, R = 230 km/h, D = 230t km
Goint East: T = t-3 hours, R = 215 km/h, D = 215(t-3)
When is total D = 1135 ?
230t + 215(t-3) = 1135
t = 4
first one flew 4 hours, the second flew 1 hour.
What is domain?
what is x-2=12?
can someone help
simpllify thesepositive exponents
sorry i wish i could help ,but i am kind of confused about this kind of algebra
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