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

Identify a constant in the equation 18x + 14 = 120 Question 3 options: A.18 B.x C.There are no constants in this equation. D.14
What court case upheld the use of implied powers by Congress in any way they see needed? a. Brown vs Maryland c. Brown vs Maine b. McCulloch vs Maryland d. McCu
Approximately _____ different languages are spoken in Africa. A. 10 B. 100 C. 1,000 D. 10,000
what is 6 squared ÷ 2 (3)+4
A(n) ____________________, which allows current to flow in one direction only, consists of two types of semiconductors joined together.
Identify a constant in the equation 18x + 14 = 120 Question 3 options: A.18 B.x C.There are no constants in this equation. D.14
Which describes a grizzly bear’s habitat?
what is the primary human cause of global warming
A full dose of a different medicine is 600 mg. Ms. Mehta took 75% of a dull dose. How much medicine did she take?
how does the modern study of history challenge earlier histories