BreBreDoeCCx BreBreDoeCCx

04-03-2018
Mathematics

contestada

Find S25 for (-7) + (-2) + 3 + 8 +...

A.
1,320

B.
1,325

C.
825

D.
820

Respuesta :

Banabanana Banabanana

04-03-2018

[tex]a_1=-7 \\ a_2=-2 \\ \\ d=a_2-a_1=-2-(-7)=5 \\ \\ \\ S_{25}= \cfrac{2(-7)+(25-1)5}{2}\cdot25 = \cfrac{-14+120}{2}\cdot25 =\cfrac{106}{2}\cdot25 =1325[/tex]

Your answer is B. 1325

Answer Link

Otras preguntas

I am so proud of each and every one of you. I don't know you or how things are going, but I just feel like someone on here need to here this: You are strong. Yo

What is the purpose of examining a witness about a prior statement it show that the witness

4 x 5 + 4-2-2 = N??

Tetrodotoxin is a potent toxin found in a variety of organisms including the pufferfish. The toxin binds to the extracellular side of the Na channel and preven

criminal profiling categories

The Sears Tower in Chicago is 40 feet taller than the Empire State Building in New York. The sum of their heights is 2868 feet. How tall is the Empire State Bui

Write and equation in slope intercept form for the line that has a Slope of 2 and passes though (1,-5)

On April 1, 2020, the premium and accrued interest on bonds sold were received by the Street Improvement Bond Debt Service Fund. (See Transaction 5-a-7 in the S

what is the average rate of change between hour 15 and hour 30

Where would you put 0 (zero) on the venn diagram