ehorton ehorton

16-05-2019
Mathematics

contestada

The given series has 6terms. What is the sum of the terms of the series 10+25+40+...+85
A.) 285

B.) 365

C.) 350

D.) 325

Respuesta :

sqdancefan sqdancefan

23-05-2019

Answer:

A.) 285

Step-by-step explanation:

The sum of an arithmetic series is the sum of the first and last terms multiplied by half the number of terms.

(10 +85)·6/2 = 285 . . . sum of 6 terms

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