aleexiswood aleexiswood

26-11-2019
Mathematics

contestada

calculate S30 for the arithmetic sequence defined by {an}={3.1n-2}
a.) 91
b.) 113
c.) 1,381.5
d.) 1,397.5

Respuesta :

PollyP52 PollyP52

26-11-2019

Answer:

c) 1,381.5.

Step-by-step explanation:

First term = 3.1 *1 - 2 = 1.1

2nd term = 3.1*2 - 2 = 4.2

3rd term = 3.1*3 - 2 = 7.3

so the common difference d = 3.1.

S30 = (30/2) [ 2* 1.1 + (30-1) * 3.1)]

= 1,381.5.

Answer Link

Otras preguntas

Point B(6, −3) is translated using the rule (x−5, y+9). What is the y-coordinate of B′ ?

Suppose the typical household spends $3,500 on goods and services during the month of January, and $4,300 on the same goods and services in February. Using Janu

How do I solve A and B ?

Was the charter of 1732 a success or failure? Explain citing text evidence to support your claim.

In trampoline competitions, a good jump is one that lasts about 1.8 seconds. (A) How high can an athlete who stays in the air 1.8 seconds go? (neglect air resis

When does gain recognition accompany a business combination?In a combination created in the middle of a fiscal year.When a bargain purchase occurs.In an acquisi

Why are gains and losses from asset sales removed from net income when calculating the cash flows from operating activities?

__________ rights refer to the range of laws, rules, and regulations that define rights for the use and transfer of resources.

A parallelogram has a base of 3.5 units and a corresponding height of 2 units. What is its area?

How does a mutation cause a change in a protein?