Question

.

Answer 1

Do you know how to apply Sigma Notation?

Answer 2

I am in online schooling, I feel ya haha. One moment for me to explain

Answer 3

Anytime.

Answer 4

Sn is often called an nth partial sum, since it can represent. the sum of a certain "part" of a sequence. A series can be represented in a compact form, called summation notation, or sigma notation

Answer 5

we have n=2 and 10 ontop of sigma. So its the terms 2, 3, 4, 5, 6, 7, 8, 9, 10. And yes.

Answer 6

compact form of the sum of the sequence**

Answer 7

What the equation is beside sigma tells us what we do with n=2 and 10.

Answer 8

@CShrix is correct.

Answer 9

\[25(0.3)^{n+1} \] tells us how to perform this equation.

Answer 10

for n=2, plug in.

Answer 11

\[25(0.3)^{2-1}\]

Answer 12

a1=7.5

Answer 13

Excellent.

Answer 14

No for n=3

Answer 15

\[25(0.3)^{2}\]

Answer 16

a2=2.25

Answer 17

a1=7.5, a2=2.25

Answer 18

Keep going until n=10, thats all the more sigma says to go.

Answer 19

Oh I was subtracting the exponent, not adding. MY BAD.
3.25 + 1.675 + 1.2025 + 1.06075 + 1.018225 + 1.0054675 + 1.00164025 + 1.000492075 + 1.0001476225

Answer 20

Silly me, glad I looked over. Here are your sums.

Answer 21

It equals 12.2142224475

Answer 22

Does it want you to evaluate the entire sigma or a certain n?

Answer 23

Lol okay. One minute

Answer 24

Oh okay.

Answer 25

http://www.mathsisfun.com/numbers/sigma-calculator.html

Answer 26

385 for what?

Answer 27

Oh no its okay. Our first term is 0.675, second term is 0.2025. I believe the third is 0.6075. That right there sums up to 1.485. So, I think we can infer what the answer may be.