Quirkco9o5garis Quirkco9o5garis

21-11-2016
Mathematics

contestada

what is the sum of the arithmetic sequence 3,9,15, if there are 36 terms ...?

Respuesta :

rybag99 rybag99

21-11-2016

n = 36

a = 3

d = 3

(n/2) (2a + (n - 1)d)

(36/2) (2(3) + (36 - 1)3)

18(6+35(3))

18 x 111 = 1998

The sum is 1998

Answer Link

Otras preguntas

What are the dimensions of AB?

Q4. State the energy transformations in the following cases. a) electric iron __________ to __________b) in lighting a candle ________ to _______ c) battery __

i need help please make a sentence like in the example

For the following image state the corresponding part based on a specific segment or Angle

Label each for branniest

any gìŕl here who can rate my ďìçķ....

Mrs. Peňa is 66 years old, has coverage under an employer plan, and will retire next year. She heard she must enroll in Part B at the beginning of the year to e

Mein WochenendeIn this activity, you will describe in German how you spend your weekends. Write about the activities you do, where these activities take place,

Geometry Answer with a proper explanation

1.6-8 facts about Qing dynasty 2.What Interactions with other civilizations did the Qing dynasty have? 3. legacy/influence ? 4.Identify the most significant pol