An = 2n² - 5n find the sequence​

Answers 1

An = Sn - S(n-1)

Hence

An = 2 n² + 5n - [2(n-1)² + 5(n-1)]

= 2n² + 5n - 2n² -2 +4n -5n +5

= 4n +3

Now

A1 = 7

A2 = 11

A3 = 15

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Other related questions that may help you

what are the one hundred elements?​

Explanation:

i don't know nakalimutan kona

Multiply and simplify the answer if possible​
question img

Answer:

A. 1/3 × 1/5

= 1/8

B. 2/3 × 1 1/2

2/3 × 1×2+1/2

2/3 × 3/2

6/6

= 1

C. 4/9 × 4

= 16/9 or 1 7/9

D. 3 1/3 × 7 1/2

3×3+1/3 × 7×2+1/2

10/3 × 15/2

150/6 ÷ 6/6

= 25

E. 1/3 × 1/6

= 1/18

F. 1 × 4 1/5

1 × 4×5+1/5

1 × 21/5

= 21/5 or 4 1/5

G. 3 1/7 × 1/4

3×7+1/7 × 1/4

22/7 × 1/4

22/28 ÷ 2/2

= 11/14

H. 3/8 × 1/4

= 3/32

I. 5/12 × 1/2

= 5/24

J. 3 1/3 × 1 1/2

3×3+1/3 × 1×2+1/2

10/3 × 3/2

30/6 ÷ 6/6

= 5
1. Saan sa pilipinas galing ang suman 2. ibat ibang tawag sa suman(give at least 2 or 3)?
Hope this helps in number 2
answer img
sulat ng 5 talata na may pangalan​

Answer:

Answer Key:

Sulat ng 5 talata na may pangalan?

Explanation:

Explanation Key:

Ang tekstong impormatibo ay isang uri ng teksto na nagbibigay kaalaman sa mga mahahalagang pangyayariIto ay may laman na tiyak na.

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