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andreaa

  • 5 years ago

can someone help me with my homework?

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  1. anonymous
    • 5 years ago
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    post your question

  2. andreaa
    • 5 years ago
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    plot the points A= (5,3), B= (-4, -6) and D =(5,-6) on a set of axes. use a ruler to connect them inorder , including D back to A, to form a QUADRILATERAL ( a shape with four sides ) A) what kind of quadrilateral was formed? B) how long is each side of quadrilateral? C) what is the area of the quadrilateral? D) what is the perminitor?

  3. dumbcow
    • 5 years ago
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    i think we need point C

  4. andreaa
    • 5 years ago
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    A= (5,3) B = (-4,3) C= (-4,-6) D= (5,-6)

  5. dumbcow
    • 5 years ago
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    do you notice any straight lines, vertically and horizontally

  6. andreaa
    • 5 years ago
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    well idont have any graph paper

  7. dumbcow
    • 5 years ago
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    _ o - o - - | | | - | | | | - - o - o does that give you idea of what it looks like

  8. andreaa
    • 5 years ago
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    noo ihavent done the problem because idont have any graph paper but can we try another problem ?

  9. dumbcow
    • 5 years ago
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    you dont need graph paper, make your own graph if you connect those points above what shape does it look like?

  10. andreaa
    • 5 years ago
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    oh okae kool ill try it out right now and see what igot ..

  11. andreaa
    • 5 years ago
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    its a square right ?

  12. dumbcow
    • 5 years ago
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    yes good job now count how long is each side?

  13. andreaa
    • 5 years ago
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    what do u mean count how long is each side? how do i count it ?

  14. andreaa
    • 5 years ago
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    one of the quadrilateral tht was formed is a square right ?

  15. dumbcow
    • 5 years ago
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    when you made your graph, you had to use marks along the axis to make your points count how many marks it takes to get from one point to the next

  16. dumbcow
    • 5 years ago
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    yes

  17. andreaa
    • 5 years ago
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    igot 41 ?

  18. andreaa
    • 5 years ago
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    points

  19. andreaa
    • 5 years ago
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    wait 41 points is the perimiter right ?

  20. dumbcow
    • 5 years ago
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    lets try something different look at point A and B

  21. andreaa
    • 5 years ago
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    each side is 10 points

  22. dumbcow
    • 5 years ago
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    yes i think you kept counting all the way around

  23. dumbcow
    • 5 years ago
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    A is (5,3) B is (-4,3) Notice the 3 stayed the same how much changed for the x-value from -4 to 5

  24. andreaa
    • 5 years ago
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    yeah thats what iwas doing but from A to B is 10 points .

  25. dumbcow
    • 5 years ago
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    oh dont include the first point count the spaces

  26. andreaa
    • 5 years ago
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    so its 8 points ?

  27. anonymous
    • 5 years ago
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    no. count the spaces in between the tick marks

  28. andreaa
    • 5 years ago
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    yeah igot it is 8 points .

  29. anonymous
    • 5 years ago
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    okay thats not right. let's try a different way. look at the x-coordinates for A and B. which is A = 5 and B = -4. then add those numbers together (don't bother with the negative sign. just ignore it). what do you get when you add them together.

  30. andreaa
    • 5 years ago
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    igot 1?

  31. anonymous
    • 5 years ago
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    5+4=?

  32. andreaa
    • 5 years ago
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    9 im very confused about this

  33. andreaa
    • 5 years ago
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    u said it was -4 thats why igot 1

  34. anonymous
    • 5 years ago
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    i know. but i also said to ignore the negative sign. when dealing in distances you don't deal with negative numbers that's why you can ignore the negative sign and treat the number like a positive number. do you understand this?

  35. andreaa
    • 5 years ago
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    yeah now idoo . so its 9 points to get across to another point?

  36. dumbcow
    • 5 years ago
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    | - - - -| - - - - - | here is a visual how many dashes on either side

  37. anonymous
    • 5 years ago
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    yes. it's 9 points. now lets figure out the perimeter. how would you go about figuring this out?

  38. andreaa
    • 5 years ago
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    iget it now ... its going to be 9 times 4?

  39. anonymous
    • 5 years ago
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    yes. good job.

  40. andreaa
    • 5 years ago
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    we skipped question C

  41. anonymous
    • 5 years ago
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    do you know the formula for area?

  42. andreaa
    • 5 years ago
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    no

  43. anonymous
    • 5 years ago
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    okay. area = length x width (A= lw) what is the length and width?

  44. andreaa
    • 5 years ago
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    idont get it?

  45. anonymous
    • 5 years ago
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    okay. length refers to number of points from A to B or C to D. width refers to the number of points from A to D or B to C.

  46. anonymous
    • 5 years ago
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    so what does length equal and width equal?

  47. andreaa
    • 5 years ago
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    youu add them all up ?

  48. andreaa
    • 5 years ago
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    or u multiply them ?

  49. anonymous
    • 5 years ago
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    okay. remember before when you found that all the distances from each point are 9. that's why the perimeter is 4 x 9. because there are 4 sides and each side has the distance of 9. so when finding area all you need to do is take the distance from one side and multiply it by another side. you with me?

  50. andreaa
    • 5 years ago
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    not really im confused

  51. andreaa
    • 5 years ago
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    9 times 9?

  52. anonymous
    • 5 years ago
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    yes :)

  53. andreaa
    • 5 years ago
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    kool 81?

  54. anonymous
    • 5 years ago
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    yes. do you want me to try to explain the area formula?

  55. andreaa
    • 5 years ago
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    yes please

  56. andreaa
    • 5 years ago
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    can u help me with more problems please?

  57. anonymous
    • 5 years ago
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    okay. here's a sample problem: find the area of the rectangle. ____________ | | | | 5 |___________| 7 the area formula is A=lw A=Area l = length w = width so the find the area of the above rectangle you need to do what first?

  58. anonymous
    • 5 years ago
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    sorry the rectangle got messed up a bit

  59. andreaa
    • 5 years ago
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    35 ? kus u times 5 and 7

  60. anonymous
    • 5 years ago
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    yes. good job :) the length is 7 the width is 5 do you have another problem that you want to solve?

  61. andreaa
    • 5 years ago
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    yes . A) draw a rectangle using Algebra tiles with area 2x + 4. write an algebraic expression for the dimensions of the rectangle formed with the tiles. B) draw a rectangle using Algebra tiles with area 2x^2 + 4x in two different ways. write the algebraic expression for each rectangle. C) how are the sketches for parts (a) and (b) different?

  62. anonymous
    • 5 years ago
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    A) okay this would help if you draw a rectangle (don't worry about the dimensions we'll figure that out later).

  63. andreaa
    • 5 years ago
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    okae

  64. anonymous
    • 5 years ago
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    _______________ | | | | ------------- something like this. now we'll need to use the area formula to figure out the dimensions. can you tell me what the area formula is?

  65. andreaa
    • 5 years ago
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    15 times 2?

  66. andreaa
    • 5 years ago
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    30

  67. andreaa
    • 5 years ago
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    13

  68. anonymous
    • 5 years ago
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    the rectangle i drew is just a visual aid. i'm asking for the area formula. whenever someone is asking for a math formula they don't want specific numbers but the general formula that uses letters that represent numbers. you with me?

  69. andreaa
    • 5 years ago
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    yeah isnt it 2x+4?

  70. anonymous
    • 5 years ago
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    for this specific problem the area does equal 2x + 4, however, i'm asking for the general area formula that applies to any area question. the area formula is A=lw. can you tell me what l and w mean?

  71. andreaa
    • 5 years ago
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    the area formula is A=lw A=Area l = length w = width

  72. anonymous
    • 5 years ago
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    yes. good job. now for this problem they gave you area. A = 2x + 4. so we know that also equals length time width A = lw A = 2x + 4 2x + 4 = lw you with me?

  73. andreaa
    • 5 years ago
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    not really im confused

  74. anonymous
    • 5 years ago
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    okay. do you know what substitution means?

  75. andreaa
    • 5 years ago
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    no

  76. anonymous
    • 5 years ago
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    what grade are you?

  77. anonymous
    • 5 years ago
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    i need to know so i can explain this in terms that you will understand

  78. andreaa
    • 5 years ago
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    10th

  79. anonymous
    • 5 years ago
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    are you taking algebra 1?

  80. andreaa
    • 5 years ago
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    yeah

  81. anonymous
    • 5 years ago
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    have you gone over factoring?

  82. andreaa
    • 5 years ago
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    yes but idont get math at all

  83. anonymous
    • 5 years ago
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    don't worry most people don't get it. it just takes practice. now can you factor anything out from 2x + 4?

  84. andreaa
    • 5 years ago
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    noo ??

  85. anonymous
    • 5 years ago
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    you can factor something out from both terms. can you tell me what the greatest common factor is for 2x and 4?

  86. anonymous
    • 5 years ago
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    think about it like this. 2x = (2)(1)(x) 4 = (2)(2) they both have in common a 2. so we can factor out the 2 so it looks like this: 2(1x + 2) make sense?

  87. andreaa
    • 5 years ago
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    just a lil bit

  88. anonymous
    • 5 years ago
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    okay let's do this in steps step 1: start with the original expression which in this case is 2x + 4 step 2: break the expression down into its factors: (2)(1)(x) + (2)(2) which still equals the original expression step 3: find the number that both terms have in common, which would be 2 step 4: factor out the 2 so it looks like this: 2(x+2) which still equals the original expression do you have any questions about this?

  89. andreaa
    • 5 years ago
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    nooo

  90. anonymous
    • 5 years ago
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    so you get it?

  91. andreaa
    • 5 years ago
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    yeah iget what u explained to me just a lil idont get how to do the problems

  92. anonymous
    • 5 years ago
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    okay remember the area formula is A=lw and the problem stated that the A=2x+4. we then factored the area into 2(x+2) which gives us 2 separate terms the problem is asking for the dimensions which is length and width A=lw A=2x+4 2x+4 = 2(x+2) A=2(x+2) 2(x+2) = lw you with me?

  93. andreaa
    • 5 years ago
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    yeah so iwrite tht down for A

  94. anonymous
    • 5 years ago
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    not quite. can you tell me what the length is?

  95. andreaa
    • 5 years ago
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    2x+4

  96. anonymous
    • 5 years ago
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    no. the area is 2x+4. i'm asking for the length area formula: A=lw A=area l= length w=width

  97. andreaa
    • 5 years ago
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    so u asked for the formula?

  98. anonymous
    • 5 years ago
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    i'm sorry but i don't know how else to explain this so here are the answers A) draw a rectangle using Algebra tiles with area 2x + 4. write an algebraic expression for the dimensions of the rectangle formed with the tiles. answer: A = 2(x+2) A=2x+4 l = 2 w = x+2 B) draw a rectangle using Algebra tiles with area 2x^2 + 4x in two different ways. write the algebraic expression for each rectangle. answer: A = 2x^2 + 4x A = 2x(x+2) l = 2x w = x+2

  99. andreaa
    • 5 years ago
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    thanks so much for ur help . what is C?

  100. anonymous
    • 5 years ago
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    you need to sketch out the rectangles for a and b then you can figure out c. it's too difficult to do that on here. best wishes. bye.

  101. andreaa
    • 5 years ago
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    thanks so much for all ur help!!!!!!!

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