taycamrichanag taycamrichanag
  • 21-10-2016
  • Mathematics
contestada

Find the sum of the first 50 terms of the arithmetic series: 1, 4, 7, 10, 13, … 2,900 3,550 3,725 4,225

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 26-10-2016
1, 4, 7, 10, 13, . . .
a = 1, d = 4 - 1 = 3, n= 50
Sn = n/2[2a + (n - 1)d] = 50/2[2(1) + (50 - 1)3] = 25[2 + 49(3)] = 25[2 + 147] = 25(149) = 3,725

Answer Link

Otras preguntas

Need quick help with 2 math questions asap!
Select the type of lodging that this sentence describes. C’est une maison entière meublée et équipée d’une cuisine et les appareils électroménagers, louée aux t
which of the following statements are true ?????
which kind of food contains lots of carbphydrates? chicken, cheese. potatoes, nuts
which one is right. I am lost and I need help
PLEASE HELP ASAP 34 BRAINLY POINTS 1) Determine the relationship between the x- and y- values. {(1, -1), (2, -2), (3, -3), (4, -4)} Type your answer as an equat
40 POINTS Match the one-to-one functions with the graphs of their inverse functions.
Need a quick answer please for math asap!
What’s the opposite of an electron
PLEASE HELP ME WITH THIS PROPORTION PROBLEM!! I'm not sure how to do this!!