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mckenzieandjesus

  • one year ago

Both trapezoids are similar. The area of the smaller trapezoid is 26 ft2. Which is the best approximation for the area of the larger trapezoid?

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  1. mckenzieandjesus
    • one year ago
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  2. mckenzieandjesus
    • one year ago
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    41 ft2 49 ft2 33 ft2 25 ft2

  3. campbell_st
    • one year ago
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    what is the scaling factor...?

  4. mckenzieandjesus
    • one year ago
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    What is scaling factor mean?

  5. mckenzieandjesus
    • one year ago
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    is it 16 and 20?

  6. campbell_st
    • one year ago
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    the small trapezoid has a side 16ft... what was it multiplied by to get 20ft in the larger trapezoid..

  7. Kash_TheSmartGuy
    • one year ago
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    The scaling factor can be measured by dividing the smaller measure by the larger measure

  8. mckenzieandjesus
    • one year ago
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    ok thanks, i got 4/5

  9. campbell_st
    • one year ago
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    so the ratio is 16:20 divide both sides of the ratio by 16 and you get 1: ? what is ?

  10. Kash_TheSmartGuy
    • one year ago
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    So, do 20/16 to get the scaling factor and multiply the quotient by 20

  11. mckenzieandjesus
    • one year ago
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    1 and 1 1/4?

  12. mckenzieandjesus
    • one year ago
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    oh 1 1/4*20=25

  13. Kash_TheSmartGuy
    • one year ago
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    Yup! Great job!

  14. campbell_st
    • one year ago
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    great that is the linear scaling factor... the area's are in a ratio of 1^2 :1.25^2 so square the scaling factor 1.25 and then multiply by the smaller area

  15. mckenzieandjesus
    • one year ago
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    Awesome thank you for helping me learn and understand how to figure it out!! (:

  16. mckenzieandjesus
    • one year ago
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    wait @campbell_st if I did 1.25 * 16 it equal 20?

  17. campbell_st
    • one year ago
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    no, the area of the smaller trapezoid is 26 so its \[(1.25)^2 \times 26\]

  18. mckenzieandjesus
    • one year ago
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    oh i forgot the 1.25^2 oops thanks

  19. inkyvoyd
    • one year ago
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    the answer is most definitely eggplants

  20. Kash_TheSmartGuy
    • one year ago
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    So, 32.5ft2

  21. campbell_st
    • one year ago
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    no its not 32.5 ft^2

  22. inkyvoyd
    • one year ago
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    @KamuiGakupo

  23. mckenzieandjesus
    • one year ago
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    @Kash_TheSmartGuy wait u said i was right with 25 why do usay 32.5?

  24. campbell_st
    • one year ago
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    some people do that... did you get an answer..?

  25. mckenzieandjesus
    • one year ago
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    Yes its 25

  26. campbell_st
    • one year ago
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    and by the answer choices you need to round your answer to the nearest whole number

  27. campbell_st
    • one year ago
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    no it's not 25

  28. mckenzieandjesus
    • one year ago
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    Lenny’s favorite radio station has this schedule: news: 19 min. commercials: 4 min. music: 37 min. If Lenny chooses a time of day at random to turn on the radio to his favorite station, what is the probability that the news will be on? My answer is 19/60 am i right?

  29. mckenzieandjesus
    • one year ago
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    what is it then?

  30. campbell_st
    • one year ago
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    do the calculation I posted...

  31. campbell_st
    • one year ago
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    your probability answer is correct

  32. mckenzieandjesus
    • one year ago
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    Ohh sorry I didn't see that, the other person got me so confused its 41 ft2

  33. campbell_st
    • one year ago
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    that's correct

  34. mckenzieandjesus
    • one year ago
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    (1.25)^2*25= 40 5/8 rounds to 41ft2

  35. mckenzieandjesus
    • one year ago
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    Yay thank You so much!!

  36. mckenzieandjesus
    • one year ago
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    @campbell_st I have another question similar to this one

  37. mckenzieandjesus
    • one year ago
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    @jim_thompson5910 i have another question similar to this one will u help?

  38. mckenzieandjesus
    • one year ago
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    Both trapezoids are similar. The area of the larger trapezoid is 61 ft2. Which is the best approximation for the area of the smaller trapezoid? 49 ft2 39 ft2 44 ft2 34 ft2

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  39. jim_thompson5910
    • one year ago
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    x = area of smaller trapezoid \[\Large \left(\frac{\text{smaller side}}{\text{larger side}}\right)^2 = \frac{\text{smaller area}}{\text{larger area}}\] \[\Large \left(\frac{24}{30}\right)^2 = \frac{x}{61}\] \[\Large \frac{24^2}{30^2} = \frac{x}{61}\] \[\Large \frac{576}{900} = \frac{x}{61}\] solve for x to get your answer

  40. mckenzieandjesus
    • one year ago
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    i got 37 1/2 closest answer to that is 39 ft2

  41. jim_thompson5910
    • one year ago
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    how did you get 37 1/2 ?

  42. mckenzieandjesus
    • one year ago
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    I tried figuring it out the way i did the other question above

  43. mckenzieandjesus
    • one year ago
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    24/30= 4/5

  44. jim_thompson5910
    • one year ago
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    \[\Large \frac{576}{900} = \frac{x}{61}\] \[\Large 576*61 = 900*x \ ... \ \text{Cross Multiply}\] \[\Large x = ??\]

  45. mckenzieandjesus
    • one year ago
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    24?

  46. jim_thompson5910
    • one year ago
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    no

  47. jim_thompson5910
    • one year ago
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    notice how I squared 24 to get 576

  48. jim_thompson5910
    • one year ago
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    576 isn't the answer. You need to solve that equation for x

  49. mckenzieandjesus
    • one year ago
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    would i square 576?

  50. mckenzieandjesus
    • one year ago
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    sorry im lost

  51. jim_thompson5910
    • one year ago
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    do you see how to solve 576*61 = 900*x

  52. mckenzieandjesus
    • one year ago
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    do i do 900*61?

  53. jim_thompson5910
    • one year ago
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    divide both sides of 576*61 = 900*x by 900 to isolate x

  54. mckenzieandjesus
    • one year ago
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    39 1/25?

  55. jim_thompson5910
    • one year ago
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    which is 39.04 most (if not all) of the answers will be in decimal form instead of mix number form

  56. jim_thompson5910
    • one year ago
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    39.04 is closest to 39

  57. mckenzieandjesus
    • one year ago
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    thats weird i already kind of had that answer but did it another way.

  58. mckenzieandjesus
    • one year ago
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    Thank u!

  59. jim_thompson5910
    • one year ago
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    no problem

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