BreBreDoeCCx
BreBreDoeCCx BreBreDoeCCx
  • 04-03-2018
  • Mathematics
contestada

Find S10 for (-1) + (-7) + (-13) + (-19) +...

A.
250

B.
-280

C.
(-23)

D.
132

Respuesta :

Banabanana
Banabanana Banabanana
  • 04-03-2018
[tex]a_1=-1 \\ a_2=-7 \\ \\ d=a_2-a_1=-7-(-1)=-6 \\ \\ \\ S_{10}= \cfrac{2(-1)+(10-1)(-6)}{2}\cdot10 = \cfrac{-2-54}{2}\cdot10 =\cfrac{-56}{2}\cdot10 =-280[/tex]

Your answer is B.-280
Answer Link

Otras preguntas

What era was the constitution written.
What is 12 1/2% expressed as a fraction?
Solve by substitution (x-2y=-4 and x=2y-4
What are two differences between California constitution and the U.S. Constitution
The following map shows the time it takes to drive between four cities in Texas. Monica needs to drive from San Antonio to Austin and then from Austin to Housto
Paul is making turkey that are 1/4 pound each. He has 2.93 pounds of turkey.
A food worker is serving a peanut free meal to a food allergic customer what should the food worker to do prevent cross contact
How many carbon and hydrogen atoms are in KNO3?​
help please I will give brainiest​
One notable disadvantage of SaaS is that _____. Group of answer choices it is not scalable or flexible it increases the burden on the subscriber's IS department