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anonymous

  • 5 years ago

6.5X+1.4y=59 What is the value of x when y=5? i dont know how to do this, help??

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  1. anonymous
    • 5 years ago
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    you can look at this equation like this, 1.4 is being multiplied to the y right?

  2. anonymous
    • 5 years ago
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    you can see that?

  3. anonymous
    • 5 years ago
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    Yess

  4. anonymous
    • 5 years ago
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    so that y in that equation is just a place holder. you can plug in any number into that y and see what x is

  5. anonymous
    • 5 years ago
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    So would you multiply the x to 5?

  6. anonymous
    • 5 years ago
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    for example x + y = 3 what is x when y = 2 you would replace 2 for y ===> x + 2 = 3 now you can solve for x

  7. anonymous
    • 5 years ago
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    I'm so confused, I'm sorry, I'm not good in math lol. you're gonna have to break it down more, if possible.

  8. anonymous
    • 5 years ago
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    for this one you have 6.5x + 1.4y = 59 what is x when y = 5 so replace y with 5 6.5x + 1.4 * 5 = 59

  9. anonymous
    • 5 years ago
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    now you can solve for x

  10. anonymous
    • 5 years ago
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    okay

  11. anonymous
    • 5 years ago
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    okay, haha

  12. anonymous
    • 5 years ago
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    let me know what is confusing to you. cause the equation can look confusing because of the decimals.

  13. anonymous
    • 5 years ago
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    Like, I understand how to replace it now, but what am I supposed to do??

  14. anonymous
    • 5 years ago
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    okay great

  15. anonymous
    • 5 years ago
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    so can i ask you to show me what you get

  16. anonymous
    • 5 years ago
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    huh?

  17. anonymous
    • 5 years ago
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    like what does it look like when you replace that 5 with that y. the y should be gone and the 5 should be in its place.

  18. anonymous
    • 5 years ago
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    yes got that part

  19. anonymous
    • 5 years ago
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    can you show me how it looks by typing it in

  20. anonymous
    • 5 years ago
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    your going to be a champion at this after no worries. because these problems are the same everytime

  21. anonymous
    • 5 years ago
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    6.5x+5=59 And thanks :)

  22. anonymous
    • 5 years ago
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    yeah that looks good. but remember you are multiplying by that 1.4

  23. anonymous
    • 5 years ago
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    because the y was multiplied by the 1.4 the 5 should also be multiplied by 1.4

  24. anonymous
    • 5 years ago
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    so, 6.5x+7=59 ?

  25. anonymous
    • 5 years ago
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    and then do you subract the 7 from both sides, and divide by 6.5?

  26. anonymous
    • 5 years ago
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    yeah thats perfect. you seem to be good at solving for x. because waht you just said is exactly how you "SOLVE FOR X" is what its called lol just take a step back and look at what you did. you plugged 5 into y so it went from 6.5x + 1.4y = 59 to 6.5x + 1.4(5) = 59 and yeah the 1.4(5) = 7 so its exactly what you got 6.5x + 7 = 59

  27. anonymous
    • 5 years ago
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    YAYYY thank you! Um, could you also help me with something else?

  28. anonymous
    • 5 years ago
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    what you did is called "plugging in" you stuck the 5 into the y. and that means when y =5 x = when you solve for x like you said

  29. anonymous
    • 5 years ago
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    yess

  30. anonymous
    • 5 years ago
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    but i need help with another problem

  31. anonymous
    • 5 years ago
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    yeah def

  32. anonymous
    • 5 years ago
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    okay, so i have -7(x-2)+5(-3x)-4x I know how to multiply them while in the parenthesis, but how do i solve for like terms?

  33. anonymous
    • 5 years ago
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    like i said these problems are the same everytime you plug in a number into x OR y what ever they ask. and then you can find out what the other one is

  34. anonymous
    • 5 years ago
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    okay yeah multiply them out and type what you get

  35. anonymous
    • 5 years ago
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    i screwed it up

  36. anonymous
    • 5 years ago
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    it was +5(3-X)

  37. anonymous
    • 5 years ago
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    i got -7x-14+15-5x-4x

  38. anonymous
    • 5 years ago
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    nice

  39. anonymous
    • 5 years ago
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    now what do i do?

  40. anonymous
    • 5 years ago
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    okay you can think of the x's as money.

  41. anonymous
    • 5 years ago
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    yes

  42. anonymous
    • 5 years ago
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    when its negative you owe a friend some money you borrowed and when its positive you owed money

  43. anonymous
    • 5 years ago
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    looks like you may be broke lol just because of the equation. so what you do is you all the like terms

  44. anonymous
    • 5 years ago
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    so you can subtract -7-5-4

  45. anonymous
    • 5 years ago
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    alright..

  46. anonymous
    • 5 years ago
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    it is -16. also bring the other ones together you have -14+15 = 1

  47. anonymous
    • 5 years ago
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    right?

  48. anonymous
    • 5 years ago
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    so the final result is -16x + 1

  49. anonymous
    • 5 years ago
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    yes

  50. anonymous
    • 5 years ago
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    OHH got it (:

  51. anonymous
    • 5 years ago
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    it looks nice like this 1 - 16x

  52. anonymous
    • 5 years ago
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    right? lol

  53. anonymous
    • 5 years ago
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    but either way is correct

  54. anonymous
    • 5 years ago
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    thank you so so so muchh(:

  55. anonymous
    • 5 years ago
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    yeah i think you learned a lot

  56. anonymous
    • 5 years ago
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    you learned to plug in

  57. anonymous
    • 5 years ago
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    the second thing is called "accumulating terms" a term is something in an equation that is being added or subtracted

  58. anonymous
    • 5 years ago
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    so in your equation its 5 terms

  59. anonymous
    • 5 years ago
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    like 2x + 3 has 2

  60. anonymous
    • 5 years ago
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    also this is a term 2(x-4)

  61. anonymous
    • 5 years ago
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    so it could be 2(x-4) + 4(x-5) ^ ^ those are both terms so theres two

  62. anonymous
    • 5 years ago
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    okay i gtg peace

  63. anonymous
    • 5 years ago
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    can you give me a medal lol

  64. anonymous
    • 5 years ago
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    lol how

  65. anonymous
    • 5 years ago
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    next to my name on the right it says give medal

  66. anonymous
    • 5 years ago
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    i gave you one

  67. anonymous
    • 5 years ago
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    next to my name on the right it says give medal

  68. anonymous
    • 5 years ago
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    thanks(: okay

  69. anonymous
    • 5 years ago
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    you didnt give me on! lol no biggy. are you in highschool?

  70. anonymous
    • 5 years ago
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    one*

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