Question

How to turn 3+3.5+4+4.5+5.+5.5+6+6.5+7+7.5 into summation notation

Answer 1

Explanation:

Given:

total number of terms = 10

difference = 0.5 → the formula = U₀ + 0.5n

U₀ = U₁ - d

= 3 - 0.5

= 2.5

Therefore, the formula = 2.5 + 0.5n

Summation notation:

`\boxed{\sum_(n=1)^(total\ terms)(formula)}`

`\sum_(n=1)^(10)(2.5+0.5n)`