dre67
dre67
07-04-2017
Mathematics
contestada
I need to know how to indicate this sum
Respuesta :
TheHero
TheHero
07-04-2017
Put n = 1
3 - 20 = -17
Put n = 2 ( incremented)
6 - 20 = -14
Put n = 3 ( incremented)
9 - 20 = -11
From the given values deduce a general recurrence relation. The series follow a pattern which is arithmetic sequence pattern.
ao = -17
d = -14 - (-17) = 3
S = n/2 (2ao + d(n-1))
n = 20 -1 + 1 = 20 (as you start from 1 not 2)
S = 20/2( 2 * -17 + 3(20-1)) = 230
Answer Link
VER TODAS LAS RESPUESTAS ( 15+ )
Otras preguntas
Which of the following phyla have representatives that exhibit radial symmetry throughout their entire lives? a. Cnidarians b. Mollusks c. Arthropods d. Annelid
quotes on discovering the hero within my self pls answer quick
after reading a book for english class,100 students were asked whether or not they enjoyed it.nine twenty-fifths of the class did not like the book.how many stu
what is one eighth divided by three fourth
Which of the sets of ordered pairs represents a function? A = {(2, −2), (5, −5), (−2, 2), (−5, 5)} B = {(4, 2), (4, −2), (9, 3), (9, −3)} Only A Only B Bot
On the first day of the month, the height of a plant was 9.46 cm. At the end of the month, the plant's height measured 15.3 cm. How many centimeters did the pl
Which of the following is not a possible shape
1. True or False The number of calories consumed must equal the numbers of calories burned A.True B.False 2.Which of the following factors that contribute
what factors help to unify the many different peoples of the United States
The slogan small family, happy family has encouraged Indian population programs such as __________. a. limiting families to one child b. government-subsidized
