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Jameshappy Group Title

So i have a problem and it's about inequality, and it required me to answer it in a complete sentence, little help please :) Problem: Glenda has a $40 gift certificate to a cafe that sells her favorite tuna sandwich for $3.75 after tax. What are the possible number of tuna sandwiches that Glenda can buy with her gift certificate?! And it even said to define a variable, write an inequality then solve. Anyone help me? Thanks :)

  • 2 years ago
  • 2 years ago

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  1. Jusaquikie Group Title
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    3.75x<40 x<40/3.75 let me know if you understand, i'll hang out a bit to answer your questions.

    • 2 years ago
  2. Jameshappy Group Title
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    Kk so explanation please :) I dont really get it

    • 2 years ago
  3. Jusaquikie Group Title
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    is this for algebra?

    • 2 years ago
  4. Jameshappy Group Title
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    pre-algerba actually

    • 2 years ago
  5. Jusaquikie Group Title
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    do you know how to solve for x? as in 3x=15

    • 2 years ago
  6. Jameshappy Group Title
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    you minus it?

    • 2 years ago
  7. Jameshappy Group Title
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    -3 on each side?

    • 2 years ago
  8. Jusaquikie Group Title
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    ok think of the equal sign as line, and you want to balance each side out

    • 2 years ago
  9. Jusaquikie Group Title
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    if you have 3 times some number = 15 then 3 times what would give you 15?

    • 2 years ago
  10. Jameshappy Group Title
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    kk keep it going :)

    • 2 years ago
  11. Jusaquikie Group Title
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    x is just a number that we don't know what it is yet but we knw that 3*(this number) is 15

    • 2 years ago
  12. Jusaquikie Group Title
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    now if we didn't know that 3*5 is 15 we could take the 3 to the other side and then all we have on the 1 side is x=

    • 2 years ago
  13. Jameshappy Group Title
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    12?

    • 2 years ago
  14. Jusaquikie Group Title
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    that would be right it it were 3+x=15 but if it's 3*x we have to divide 3

    • 2 years ago
  15. Jameshappy Group Title
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    oops nvm i get it

    • 2 years ago
  16. Jameshappy Group Title
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    ohh i was right nvm again :P

    • 2 years ago
  17. Jusaquikie Group Title
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    think of the equal sign like the opposite side, so if you 3*5=15 then 3=15/5

    • 2 years ago
  18. Jusaquikie Group Title
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    if it's multiplied on 1 side then to move it you devide the other side by what your moving, if it's just + or - then you change the sign and add or subtract from the other side

    • 2 years ago
  19. Jameshappy Group Title
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    so 3x=15 then its gonna be 15+3=x?

    • 2 years ago
  20. Jameshappy Group Title
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    can you put it in a simple way ?

    • 2 years ago
  21. Jusaquikie Group Title
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    no if x is next to a number without a + or minus between that means x multiplied by the number

    • 2 years ago
  22. Jusaquikie Group Title
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    3x means 3 times x

    • 2 years ago
  23. Jameshappy Group Title
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    ok gotcha i know that but how to make it balance on either sides?

    • 2 years ago
  24. Jusaquikie Group Title
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    just like x/3 is x divided by 3

    • 2 years ago
  25. Jameshappy Group Title
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    so x=15?

    • 2 years ago
  26. Jameshappy Group Title
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    because 15/3=3

    • 2 years ago
  27. Jusaquikie Group Title
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    so if you had \[\frac{ x }{ 3 }=5\] that would mean that you would need to multiply both sides by 3 so you would get \[\frac{ 3x }{ 3 }=5*3\] the 3 and 3 cancle out and your left with x=3*5 or 15

    • 2 years ago
  28. Jusaquikie Group Title
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    yes i think your starting to understand a bit

    • 2 years ago
  29. Jusaquikie Group Title
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    they are still equal if you do the same thing to both sides so to move 3+x=15 we would subtract 3 from both sides and we get x+12 if we have 3x=15 we have to divide both sides by 3 so we get x=15/3 or 5 if we have x/3= 5 we multiply both sides by 3 and get x= 3*5 or 15

    • 2 years ago
  30. Jameshappy Group Title
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    OH i get it so back to the problem 3x=15 would be x=5?

    • 2 years ago
  31. Jusaquikie Group Title
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    < and > work the same way if 3+2>4 then 3>4-2

    • 2 years ago
  32. Jameshappy Group Title
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    oh ok get it:)

    • 2 years ago
  33. Jusaquikie Group Title
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    yes that is correct lets' try this one to be sure you understand \[4x=20\] what is x?

    • 2 years ago
  34. Jameshappy Group Title
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    So what about this prbolem? : 2/3 > 1/2 - d/6 / <---- mean " over". Like 2 over 3, 1 over 2 and d over 6

    • 2 years ago
  35. Jusaquikie Group Title
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    ok treat the > just like you would = what would you do first?

    • 2 years ago
  36. Jusaquikie Group Title
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    you are trying to get d by itself

    • 2 years ago
  37. Jameshappy Group Title
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    kick the d out?

    • 2 years ago
  38. Jusaquikie Group Title
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    no we want to save that for last wet's get the addition/subtraction out of the way first, \[\frac{ 2 }{3 }>\frac{ 1 }{ 2 }-\frac{ d }{ 6 }\] so if we move 1/2 over it becomes -1/2

    • 2 years ago
  39. Jameshappy Group Title
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    how?

    • 2 years ago
  40. Jusaquikie Group Title
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    so\[\frac{ 2 }{ 3 }-\frac{ 1 }{ 2 }>\frac{ d }{ 6 }\] now how do we subtract fractions?

    • 2 years ago
  41. Jameshappy Group Title
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    uhmm divide it?

    • 2 years ago
  42. Jameshappy Group Title
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    OMG im so dump. SOrry im just wasting your time :P

    • 2 years ago
  43. Jusaquikie Group Title
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    you need a common denominator, nah it's ok i need a break from my Calculus homework lol

    • 2 years ago
  44. Jameshappy Group Title
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    Oh lol you doing a 7th grader math hw

    • 2 years ago
  45. Jusaquikie Group Title
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    don't worry about the d/6 right now one piece at a time, math is all in baby steps, when we try to skip stuff we make mistakes so think of it as doing what we know how to make it simpler and right now we can make it simple by subtracting our fractions 2/3-1/2

    • 2 years ago
  46. Jusaquikie Group Title
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    yeah some day you can help out a seventh grader lol and it's all be good

    • 2 years ago
  47. Jameshappy Group Title
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    haha thanks :) OK back to the prob. so 2/3 - 1/2 gonna be 1?

    • 2 years ago
  48. Jusaquikie Group Title
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    so to subtract the denominator has to be the same so we make them the same by finding something in common or cross multiplying so \[\frac{ 2*2 }{ 3*2 } - \frac{ 1*3 }{ 2*3 } = \frac{ 4 }{ 6 }-\frac{ 3 }{6 }\]

    • 2 years ago
  49. Jameshappy Group Title
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    oh yeah i forgot im not that good at math :P or sp its gonna be 1/6 ?

    • 2 years ago
  50. Jusaquikie Group Title
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    now we have \[\frac{ 1 }{ 6 }>\frac{ d }{6 }\] what would happen if we multiplied both sides by 6?

    • 2 years ago
  51. Jameshappy Group Title
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    uhm it still gonna be the same number. But since it lready 6 so i dont think we have to

    • 2 years ago
  52. Jameshappy Group Title
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    multiply it right?

    • 2 years ago
  53. Jusaquikie Group Title
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    yes so what is 6/6

    • 2 years ago
  54. Jameshappy Group Title
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    oh so the answer gonna 6?

    • 2 years ago
  55. Jusaquikie Group Title
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    no, if you have a slice of pizza that is 1/6 of the pizza and then you multiply that by 6 what do you have?

    • 2 years ago
  56. Jameshappy Group Title
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    |dw:1352952613102:dw|

    • 2 years ago
  57. Jusaquikie Group Title
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    the bottom number means that your top number is cut in to that many pieces so 1/6 of a pizza means that you have 6 pieces to make a whole pizza

    • 2 years ago
  58. Jameshappy Group Title
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    so the answer is 6/6?

    • 2 years ago
  59. Jusaquikie Group Title
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    |dw:1352952779790:dw|

    • 2 years ago
  60. Jusaquikie Group Title
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    |dw:1352952857801:dw|

    • 2 years ago
  61. Jameshappy Group Title
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    ohhh..... i don't get it.

    • 2 years ago
  62. Jusaquikie Group Title
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    how good are you with fractions?

    • 2 years ago
  63. Jusaquikie Group Title
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    you might need to review them some

    • 2 years ago
  64. Jusaquikie Group Title
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    (1/1) = (2/2)=(3/3)=(4/4)=(5/5)=(6/6) all =1

    • 2 years ago
  65. Jameshappy Group Title
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    Like really bad

    • 2 years ago
  66. Jusaquikie Group Title
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    6d/6 is the same as (6/6)*d or 1*d or just d

    • 2 years ago
  67. Jameshappy Group Title
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    I might need to ask my teacher for that, can you help me with something else instead?

    • 2 years ago
  68. Jusaquikie Group Title
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    sure

    • 2 years ago
  69. Jameshappy Group Title
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    English?

    • 2 years ago
  70. Jusaquikie Group Title
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    lol nah I don't like English as much as math, good luck

    • 2 years ago
  71. Jameshappy Group Title
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    oh wow lol fine back to math

    • 2 years ago
  72. Jameshappy Group Title
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    lol im done with everything now, im free :)

    • 2 years ago
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