A community for students.
Here's the question you clicked on:
 0 viewing
gianarpt
 2 years ago
Im so freaking confused and stupid help me
gianarpt
 2 years ago
Im so freaking confused and stupid help me

This Question is Closed

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0All 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

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

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1if greg runs at a speed of 8.5 mph and he runs for h hours, how far will he run?

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0im really stupid no joke when it comes to math

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1you're not stupid, you just need more practice

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1say he ran for 1 hour how far would he get?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1good, in 2 hours he will go ____ miles

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1how did you get that

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so 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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so if d = distance traveled, then d = 8.5h

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1ok so you'll just write 8.5h

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.18.5h is the expression d = 8.5h is the equation

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0what about the other expression i have to write for efren

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1keep in mind that greg started 1/2 hour later than efren

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so you have to account for that

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0oh & it says plus the distance he wil he will have traveled when greg leaves

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1let'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

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0so would it be greg leaving at 9:30??

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1but 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

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so 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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1distance formula: distance = rate x time d = r x t d = rt

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1rate is known as speed

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0oh yeah i remember that lol

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0so he walked 2 miles??

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1yes in that half hour where he got the head start

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so he walked 2 miles in the first half hour then he walked an additional 4h miles after 9:30 am

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1in total, efren walked 2+4h or 4h + 2 miles

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0so what expression would be for efren plus the distance he would of traveled when greg left

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.14h is the amount he traveled when greg left 2 is the amount he traveled when greg was still at home

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1to find out when the two will meet, you just set the two expressions equal to one another

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.18.5h = 4h + 2 and solve for h

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1yep you want to find out when the two will walk the same distance (ie find out when/where the two will meet)

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0could you help me figure that out ill try to do most my self

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1well you see how i got 8.5h = 4h + 2 right?

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0you added the time he waited to the expression

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1ok great, subtract 4h from both sides 8.5h = 4h + 2 8.5h  4h = 2 4.5h = 2 what's next?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.14.5h is the same as 4.5 x h

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1how do you undo multiplication

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0OH! :) I know!! 4.5h/4.5 2/4.5

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1you are correct

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0h = 0.4 repeating (so line over the 4)

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so that's the rough approximation of how many hours it will take (after 9:30) for the two to meet

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1and for the two to travel the same distance

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1convert to minutes to get: 0.444*60 = 26.64 so it will take about 26.64 minutes

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

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1I'm sure you'll do fine, just keep your head up and keep practicing

gianarpt
 2 years ago
Best ResponseYou've already chosen the best response.0thank you jim have a nice day!

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1you're welcome
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.