a.
To calculate: The sum of twenty multiple of 2.
a.
Answer to Problem 25WE
The sum of first twenty multiple of 2 is 420.
Explanation of Solution
Given information: The term start with 2
According to the question,
Let, first term,
Second term,
Common difference,
Calculation:
Hence, the sum of first twenty multiple of 2 is 420.
b.
To calculate: The sum of twenty powers of 2.
b.
Answer to Problem 25WE
The sum of first twenty powers of 2 is 2097150.
Explanation of Solution
Given information: The term start with
According to the question,
Let, first term,
Second term,
Common ratio,
Calculation:
Hence, the sum of first twenty powers of 2 is 2097150.
Chapter 11 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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