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 number on the number line is exactly the same distance from -8 and +4?
The map shows the Gupta Empire. A map titled Expansion under Gupta Rulers. A key shows rulers and area of expansion by color. Chandra Gupta I (circa 320 to 35 C
Please help mee!!!!!!
can budget deficit be avoided? how?​
do you agree that junk food should be banned?why​
What did Cesar Chavez do to advance the rights of migrant farm workers? a. he encouraged all migrant farmers to leave US b. he set up a union and promoted boyco
Question 19 of 20 Which statement describes a characteristic of speaking as compared to writing? OA. Speaking is more lasting than writing. OB. Speaking is more
For each equation, determine whether it is linear. (a) y=x-6 (b) y= 4x (C) y= 3x2-4 (d) y=-x)
Look at the following numbers: -6, 0, 6, 12 Which pair of numbers has a sum of 0? (5 points) a 6, 12 b 0, 6 c -6, 0 d 6, -6 Look at the following numbers: -
Did the chicken come first or the egg I’m so confused pls help!!!