A series can be represented in a compact form, called summation or sigma notation.
The Greek capital letter, ∑ , is used to represent the sum. The series 4+8+12+16+20+24 can be expressed as 6∑n=14n .
The expression is read as the sum of 4n as n goes from 1 to 6 .

Given:

2.5 + 2.5(1.2) + 2.5(1.2)2 + ⋯ + 2.5(1.2)87

If we look at the power it is always one less the term i.e., for first term the value of k=0.

So, the series in the form of summation can be written as

∑ k = 1 88 2.5 ⁢ ( 1.2 ) k

Learn more about sigma notation

#SPJ4

8 0

1 year ago

ki77a [65]

I think what your asking for is that x=10

7 0

3 years ago

Marat540 [252]

Answer:

(1) 1 and 7

Step-by-step explanation:

Hello!

We can solve by isolating the variable.

<h3>Solve</h3>

There are two solutions, 1 and 7.

The answer is option 1: x = 7, x = 1.

4 0

2 years ago

madam [21]

Answer:

I think it's b or d

Step-by-step explanation:

3 0

2 years ago