Ratman87 Ratman87
  • 28-08-2021
  • Mathematics
contestada

Evaluate each arithmetic series described.

a1= 10 d= 8 n= 11


A) 1116
B) 1120
C) 550
D) 1118

Respuesta :

Witcher3
Witcher3 Witcher3
  • 28-08-2021

[tex]S_n=\frac{a_1+a_n}{2}\cdot n\\\\a_1=10, \ d=8, \ n=11\\\\a_{11}=a_1+10d=10+10\cdot8=10+80=90\\\\S_{11}=\frac{10+90}{2}\cdot11=\frac{100}{2}\cdot11=50\cdot11=\boxed{550}\\\\\text{Answer}:\text{C})[/tex]

Answer Link

Otras preguntas

los estudiantes comprendimos la leccion
i need help what's the answer?​
does someone know how to do this math I need help please ​
Shoreside Bikes is a bike rental company that charges tourists by the hour as shown in the table. Use the table to fill in the missing representations.
You're researching the effect of television viewing on viewers under the age of 12. Which source should you use? Select one: O a. a 2012 New York Times article
Which is the best summary of the beginning of "The Beginnings of the Maasai”? The Father of the Maasai introduces his daughter, explaining how the daughters and
Study the diagrams below, and then answer the questions. Which diagram(s) represent(s) (A) an element (B) a pure substance (C) a compound (D) the element, oxyge
a rectangular field 50m wide and ym long requires 260m fencing. find y
what is the answer to this
Hidrógeno de oxigeno Cómo nombrar en las otras nomenclaturas y procedimiento