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anonymous

  • one year ago

A system of equations is shown below: 6x – 5y = 5 3x + 5y = 4 The x-coordinate of the solution to this system of equations is _____.

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  1. anonymous
    • one year ago
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    @horsegirl27

  2. anonymous
    • one year ago
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    @HELP-ME-PLZ

  3. pooja195
    • one year ago
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    \begin{bmatrix}6x-5y=5 \\3x+5y=4\end{bmatrix}

  4. pooja195
    • one year ago
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    {Multiply:3x+5y=4 by 2 \[\begin{bmatrix}6x-5y=5 \\6x+10y=8\end{bmatrix}\] \[\huge~\rm~6x+10y=8\]

  5. UsukiDoll
    • one year ago
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    why not use elimination method?

  6. pooja195
    • one year ago
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    Thats what im using as u can see

  7. UsukiDoll
    • one year ago
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    6x – 5y = 5 3x + 5y = 4 if you add these equations together, we can get rid of the y's.

  8. UsukiDoll
    • one year ago
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    then we can solve for x

  9. pooja195
    • one year ago
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    Or that works too ;P 6+3=? 5+4=?

  10. anonymous
    • one year ago
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    can yu help me more

  11. UsukiDoll
    • one year ago
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    so by solving for x we can place x = ? into one of the equations and solve for y xD I'm just finding the best method and seeing that -5y and 5y is already there, why not cancel them out first?

  12. UsukiDoll
    • one year ago
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    I want to see if you understand the concepts.. so can you please add 6x – 5y = 5 3x + 5y = 4 together and solve for x? @elmo23

  13. anonymous
    • one year ago
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    -1

  14. UsukiDoll
    • one year ago
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    close 9x=9 (divide both sides by 9) x = 1

  15. UsukiDoll
    • one year ago
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    so now we can just plug in x = 1 into one of our equations...

  16. UsukiDoll
    • one year ago
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    let's plug in x = 1 in here 3x + 5y = 4 so we have 3(1)+5y=4 3+5y=4

  17. UsukiDoll
    • one year ago
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    so we need to solve for y

  18. UsukiDoll
    • one year ago
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    so subtract 3 on both sides (first step) and then divide both sides by 5 (second step)

  19. anonymous
    • one year ago
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    it (1,/5)

  20. UsukiDoll
    • one year ago
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    3+5y=4 -3 -3 5y=1 y= 1/5 correct so x = 1 and y = 1/5 we can check that these values are correct by plugging them back into the equation

  21. anonymous
    • one year ago
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    (1, 1/5) like that

  22. UsukiDoll
    • one year ago
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    yeah, but the question isn't asking to put it in order paired form which is (1, 1/5) so we can just leave it as x = 1 and y = 1/5 :)

  23. anonymous
    • one year ago
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    so i need to put that as the answer ? or no

  24. UsukiDoll
    • one year ago
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    yes just put x = 1 and y = 1/5. I'll plug the values back in the equations to prove that we have found the right values of x and y

  25. anonymous
    • one year ago
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    thanks can u help me again

  26. UsukiDoll
    • one year ago
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    6x – 5y = 5 3x + 5y = 4 so for x = 1 and y = 1/5 \[6(1)-5(\frac{1}{5})=5\] \[6-(\frac{5}{5})=5\] \[6-1=5\] \[5=5\] 3x + 5y = 4 \[3(1)+5(\frac{1}{5})=4\] \[3+(\frac{5}{5})=4\] \[3+1=4\] \[4=4\]

  27. UsukiDoll
    • one year ago
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    yeah sure.

  28. anonymous
    • one year ago
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    Nick works two jobs to pay for college. He tutors for $15 per hour and also works as a bag boy for $8 per hour. Due to his class and study schedule, Nick is only able to work up to 20 hours per week but must earn at least $150 per week. If t represents the number of hours Nick tutors and b represents the number of hours he works as a bag boy, which system of inequalities represents this scenario? t + b greater than or equal to 20 15t + 8b = 150 t + b less than or greater to 20 15t + 8b greater than or equal to 150 t + b less than or greater to 20 15t + 8b less than or greater to 150 None of the systems shown represent this scenario.

  29. UsukiDoll
    • one year ago
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    uh oh. I'm not good at these word problems. @rishavraj

  30. anonymous
    • one year ago
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    oh ok im trying to get a good grade so i can get every thing good

  31. anonymous
    • one year ago
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    @pooja195

  32. pooja195
    • one year ago
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    Repost it someone else will help im not good with these

  33. anonymous
    • one year ago
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    ight

  34. anonymous
    • one year ago
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    @hero

  35. pooja195
    • one year ago
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    I keep getting this t+b = 20 b=bag boy hours t=tutor hours 15t+8b = 150 We know he earns %15 per hour for the tutoring job and $8 for bag boy in total he earns $150 We know this but since none match it would be none of the scienerios

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