Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
gdogthegirl
Group Title
Ok i understood it finally in regular problems but they had to go and give me a word problem and im confused now i thought i started it right but when i keep working through it i get no answers that match the possible ones
 2 years ago
 2 years ago
gdogthegirl Group Title
Ok i understood it finally in regular problems but they had to go and give me a word problem and im confused now i thought i started it right but when i keep working through it i get no answers that match the possible ones
 2 years ago
 2 years ago

This Question is Closed

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
Gina, Sam and Robby all rented movies from the same video store. They each rented some dramas, comedies and documentaries. Gina rented 11 movies total. Sam rented twice as many dramas, three times as many comedies, and twice as many documentaries as Gina. He rented 27 movies total. If Robby rented 19 movies total with the same number of dramas, twice as many comedies, and twice as many documentaries as Gina, how many movies of each type did Gina rent? 3 dramas, 5 comedies and 3 documentaries 2 dramas, 6 comedies and 3 documentaries 1 dramas, 4 comedies and 6 documentaries 4 dramas, 3 comedies and 4 documentaries
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
I have to use substitution or elimnation
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
i started out with these equations from it : a+b+c=11 2a+3b+2c=27 a+2b+2c=19 but, im not sure if these are right or not
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
Or at least tell me if i started it off right with those equations ^^^^
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
Let x represent the number of dramas Let y represent the number of comedies Let z represent the number of documentaries Gina: x + y + z = 11 Sam: 2x + 3y + 2z = 27 Robby: x + 2y +2z = 19
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
a basically used a b and c but ok
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
Rearrange the first equation for x: x = 11  y  z
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
After rearranging you can put this equation in (2) or (3) and eliminate for y or z. Substitute x = 11  y  z into (2) 2(11  y  z) + 3y + 2z = 27 22  2y  2z + 3y + 2z = 27 y = 27  22 y = 5 YAY that's the value of y :P Substitute y = 5 into (1) x + y + z = 11 x + 5 + z = 11 x + z = 6 x = 6  z Substitute x = 6  z and y = 5 into (3) x + 2y + 2z = 19 6  z + 2y + 2z = 19 2y + z = 13 z = 13  2y z = 13  2(5) z = 3 There's your "z" value Substitute y = 5 and z = 3 into (1) to solve for x x + y + z = 11 x + 5 + 3 = 11 x = 11  8 x = 3 Check if your values satisfy the equation: LS = 2x + 3y + 2z = 2(3) + 3(5) + 2(3) = 6 + 15 + 6 = 27 RS = 27 Since LS = RS, the values of x, y and z satisfy the equation. Therefore, x = 3, y = 5 and z = 3. WELL?
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
wow thank you so much
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
ahah no problem. my back hurts now
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
awe im sorry :(
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
aha no worries.
 2 years ago

gdogthegirl Group TitleBest ResponseYou've already chosen the best response.0
ok and that is what some good ole ibuprofen is for
 2 years ago

trackzz Group TitleBest ResponseYou've already chosen the best response.1
huh, yeah sure. :P
 2 years ago
See more questions >>>
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.