kendonbennett24
Answered

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Evaluate a1 (r)^n-1 for a1 = 2, r= 3, and n = 4.
A. 216
B. 18
C. 32
D. 54

Evaluate A1 Rn1 For A1 2 R 3 And N 4 A 216 B 18 C 32 D 54 class=

Sagot :

Option D

[tex]a1(r) {}^{n - 1} [/tex]

Putting values:

[tex]2(3) {}^{4 - 1} [/tex]

[tex]2(3) {}^{3} [/tex]

[tex]2 \times 27[/tex]

[tex] = 54[/tex]

Hence, Proved.

Hi1315

Answer:

[tex]54[/tex]

Answer D is correct

Step-by-step explanation:

[tex]a_1 \: {r}^{n - 1} \\ 2 \times {3}^{4 - 1} \\ 2 \times {3}^{3} \\ 2 \times 3 \times 3 \times 3 \\ 2 \times 9 \times 3 \\ 2 \times 27 \\ = 54[/tex]

Hope this helps you.

Let me know if you have any other questions :-)

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