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? asked in Science & MathematicsMathematics · 9 years ago

Please help? Algebra 2? ASAP?

What is the 23rd term of the arithmetic sequence where a1 = 8 and a5 = 22?

A) 65

B) 77

C) 85

D) 97

What is the 32nd term of the arithmetic sequence where a1 = 14 and a13 = -58?

A) -178

B) -172

C) -166

D) -160

What is the 32nd term of the arithmetic sequence where a1 = -34 and a9 = -122?

A) -408

B) -397

C) -386

D) -375

2 Answers

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  • 9 years ago
    Favorite Answer

    1.

    4d = 22-8 = 14

    d = 3.5

    a23 = a1+22d = 8+22*3.5 = 85

    Answer: C

    2.

    12d = -58-14

    d = -6

    a32 = a1+31d = 14+31(-6) = -172

    Answer: B

    3.

    8d = -122+34

    d = -11

    a32 = a1+31d = -34+31(-11) = -375

    Answer: D

  • Anonymous
    4 years ago

    sparkling up for the two x or y in the two equation then plug what you get in the different equation for that comparable variable. as an occasion: a million.12x=3.sixty 4+a million.4y->divide the two factors by ability of a million.12 after which you get x=(3.sixty 4/a million.12)+(a million.4y/a million.12) (Sorry, i don't have a calculator). Plug that final equation in for x and then slove for y. once you sparkling up for y interior the precise equation plug it in in the different equation and locate x.

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