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tej18
Group Title
[6.03] What is the value of the y variable in the solution to the following system of equations?
2x + y = 5
x + 3y = 0
−1
1
3
−3
 2 years ago
 2 years ago
tej18 Group Title
[6.03] What is the value of the y variable in the solution to the following system of equations? 2x + y = 5 x + 3y = 0 −1 1 3 −3
 2 years ago
 2 years ago

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tej18 Group TitleBest ResponseYou've already chosen the best response.0
i really need help :0
 2 years ago

abayomi12 Group TitleBest ResponseYou've already chosen the best response.0
Let x = xylophones and y = yachts. Fred is buying xylophones and yachts. He does not pay attention to how much each costs, rather he just pays for all of them in one go. When he visits the shop on Monday, he buys two xylophones and one yacht for a total price of $9. He then thanks the salesman and goes home. The next day he buys three xylophones and four yachts for a total price of $26. Fred is now deeply curious as to how much his xylophones and yachts would have cost him individually, so he sets up a set of simultaneous equations in an attempt to find an answer to the ultimate question... 2x + y = 9 3x + 4y = 26 Transpose equation 1 and substitute into 2: y = 9  2x 3x + 4(9  2x) = 26 3x + 36  8x = 26 5x = 10 x = 2 y = 9  4 y = 5 So it turns out that xylophones cost $2 each and yachts cost $5 each. ANSWERS: 3. Parallel 4. 6 + x 8. 1 9. (9, 1) 10. Multiply the first equation by 2 11. 42 12. 22.95 + 0.08m = 27.95 + 0.06m 13. 70 14. d = 3(r – 30) and d = 2(r + 30) 15. 3 hours 16. (5, 1) 17. Green area: 2x + y > 2 and x − y < 6 Yellow area: 2x + y > 2 and x − y > 6 18. Answer shown in part 2 (very long answer)
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
\[\large{\color{red}{2x+y=5}}\] \[\large{\color{blue}{\textbf{Solve for x in this eqn}}}\]
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
@tej18 what do you get after solving for x in 2x+y=5
 2 years ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.1
OMG......... what is that @abayomi12
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
ikr! @sauravshakya
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
i dont get it @mathslover
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
2x+y=5 2x=5y solve for x
 2 years ago

abayomi12 Group TitleBest ResponseYou've already chosen the best response.0
teji u still don't get the answer that all the answer i just solved there
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
@mathslover so x= 5/2  y/2??
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
x=(5y)/2 put this in 2nd eqn
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
solve for y then you will get your answer
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
i m confused @mathslover
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
\[\large{x=\frac{5y}{2}}\] \[\large{x+3y=0}\] \[\large{\frac{5y}{2}+3y=0}\] \[\large{\frac{5y+2y}{2}=0}\] \[\large{5+y=0}\]
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
oops sorry : \[\large{\frac{5y+6y}{2}=0}\] \[\large{5+5y=0}\]
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
so y=0? @mathslover
 2 years ago

Kaederfds Group TitleBest ResponseYou've already chosen the best response.0
i got y = (1)
 2 years ago

tej18 Group TitleBest ResponseYou've already chosen the best response.0
oh kk thanks! @Kaederfds
 2 years ago

Sulli_lim Group TitleBest ResponseYou've already chosen the best response.0
Answer: 1 2x+y=5 x+3y=0 So, x=3y Substitute x=3y into 2x+y=5 2(3y)+y=5 6y+y=5 5y=5 y=1
 2 years ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
5y=5 y=1 @tej18
 2 years ago
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