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tristanj420

  • 2 years ago

can some one help me with this?

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  1. tristanj420
    • 2 years ago
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    The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference. 8/9 1.8 2

  2. RomeoRaj
    • 2 years ago
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    a10 = a+9d 13 = (-5)+9d 13+5 = 9d 18 = 9d 18/9 = d 2 = d

  3. RomeoRaj
    • 2 years ago
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    common difference is 2

  4. tristanj420
    • 2 years ago
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    thank you so much i'am talking and test that can let me pass the next grade

  5. tristanj420
    • 2 years ago
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    i have aonther ?

  6. RomeoRaj
    • 2 years ago
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    just give the question i'll try to solve...

  7. tristanj420
    • 2 years ago
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    okey here it is Find the 31st term of the following sequence. 9, 15, 21, ... 186 189 195

  8. RomeoRaj
    • 2 years ago
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    a31 = a+30d here a=9 & d=6 therefore, a31 = 9+30x6 a31 = 9+180 a31=189

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