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gianarptBest ResponseYou've already chosen the best response.0
All of the questions are based off of this word problem: efren leaves home at 9am and walks 4 mph. his bro greg leaves 1/2 hr later and runs 8.5 mph in the same direction as efren. predict the time at which gred will catch up to efren
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
write an expression for the distance of greg's travels per hour let h stand for time in hours!
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
write an expression for the distance efren travels per hour plus the distance he will have traveled when greg leaves the house
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
if greg runs at a speed of 8.5 mph and he runs for h hours, how far will he run?
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
im really stupid no joke when it comes to math
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you're not stupid, you just need more practice
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
say he ran for 1 hour how far would he get?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
good, in 2 hours he will go ____ miles
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
how did you get that
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so in 3 hours, he will run 8.5 x 3 = 25.5 miles so in 4 hours, he will run 8.5 x 4 = 34 miles .... in general... if he runs h hours (some unknown amount of hours), then he will run 8.5 x h or just 8.5h miles
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so if d = distance traveled, then d = 8.5h
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
oh okay so it says write an expression but im confused on how to write one
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
ok so you'll just write 8.5h
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
8.5h is the expression d = 8.5h is the equation
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
what about the other expression i have to write for efren
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
keep in mind that greg started 1/2 hour later than efren
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so you have to account for that
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
oh & it says plus the distance he wil he will have traveled when greg leaves
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
let's assume they both start at the same time (9:30 am) if efren walks at 4 mph and he does this for h hours, then he will walk a total of 4h miles
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
so would it be greg leaving at 9:30??
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
but this isn't the whole story because efren leaves at 9:00 am instead of 9:30 am so he's got a 1/2 hr head start
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
but i dont know what the distance formula is either thats one of the questions
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so you have to add in the fact that he walked some additional distance in that half hour where he got the head start if he walked 0.5 hours (1/2 hr) at a speed of 4 mph, then he would have walked 4*0.5 = 2 miles
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
distance formula: distance = rate x time d = r x t d = rt
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
rate is known as speed
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
oh yeah i remember that lol
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
so he walked 2 miles??
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
yes in that half hour where he got the head start
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so he walked 2 miles in the first half hour then he walked an additional 4h miles after 9:30 am
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
in total, efren walked 2+4h or 4h + 2 miles
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
so what expression would be for efren plus the distance he would of traveled when greg left
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
4h is the amount he traveled when greg left 2 is the amount he traveled when greg was still at home
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
oh i see, sorry ive been up all night doing this and im annoyed and fed up :(
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
to find out when the two will meet, you just set the two expressions equal to one another
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
8.5h = 4h + 2 and solve for h
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
so the next question is weird it says write an equation setting the distance expressions in steps 3 and 4 equal
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
yep you want to find out when the two will walk the same distance (ie find out when/where the two will meet)
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
could you help me figure that out ill try to do most my self
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
well you see how i got 8.5h = 4h + 2 right?
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
you added the time he waited to the expression
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
ok great, subtract 4h from both sides 8.5h = 4h + 2 8.5h  4h = 2 4.5h = 2 what's next?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
4.5h is the same as 4.5 x h
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
how do you undo multiplication
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
OH! :) I know!! 4.5h/4.5 2/4.5
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you are correct
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
h = 0.4 repeating (so line over the 4)
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so that's the rough approximation of how many hours it will take (after 9:30) for the two to meet
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
and for the two to travel the same distance
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
convert to minutes to get: 0.444*60 = 26.64 so it will take about 26.64 minutes
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
thank you very much for helping me i wish i was as smart as you i struggle just to keep my B average
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
I'm sure you'll do fine, just keep your head up and keep practicing
 one year ago

gianarptBest ResponseYou've already chosen the best response.0
thank you jim have a nice day!
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you're welcome
 one year ago
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