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anonymous

  • one year ago

Given figure PQRS ~ figure TUVW, what is the value of b? [ ]yd

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  1. anonymous
    • one year ago
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    @amistre64

  2. amistre64
    • one year ago
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    are the shapes similar?

  3. anonymous
    • one year ago
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    Yes

  4. amistre64
    • one year ago
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    then what do we know about similar shapes and their properties?

  5. anonymous
    • one year ago
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    They are congruent?

  6. amistre64
    • one year ago
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    congruent means equal ... these are not equal

  7. amistre64
    • one year ago
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    the solution lies with something called a scale factor ...

  8. anonymous
    • one year ago
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    ok

  9. amistre64
    • one year ago
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    what is the scale factor

  10. anonymous
    • one year ago
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    2.6

  11. amistre64
    • one year ago
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    i dont get 2.6, how are you trying to work it?

  12. anonymous
    • one year ago
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    I did 3.9-1.3

  13. amistre64
    • one year ago
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    im not sure why you would do that ... a scale factor is multiplication ... not addition

  14. amistre64
    • one year ago
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    we have 2 sides that we can compare: 3.9 and 1.3 we scale 3.9 to get to 1.3 3.9k = 1.3 and we scale 9.6 to get to b 9.6k = b

  15. anonymous
    • one year ago
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    3.2 I did 3.9 1.3 and got 3.... so I did 3.2 divided by 3

  16. amistre64
    • one year ago
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    3 is the scale factor from right to left :) but its workable all the same in my setup; k = 1/3 9.6/3 = b = 3.2

  17. anonymous
    • one year ago
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    so B=3.2

  18. amistre64
    • one year ago
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    correct

  19. anonymous
    • one year ago
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    Thank you

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