EugeneLil EugeneLil
  • 03-08-2016
  • Mathematics
contestada

Find the 113th term in the sequence
-10.5, -6.6, -2.7, 1.2, ...

A)-447.3 B) 426.3 C)430.2 D)-1172.1

Respuesta :

dalendrk
dalendrk dalendrk
  • 09-08-2016
-10.5; -6.6; -2.7; 1.2; ...

It's an arythmetic sequence:

[tex]a_1=-10.5;\ d=-6.6-(-10.5)=3.9\\\\a_n=a_1+(n-1)d\\\\a_n=-10.5+(n-1)\cdot3.9=-10.5+3.9n-3.9=3.9n-14.4\\\\a_{113}=3.9\cdot113-14.4=440.7-14.4=426.3\\\\Answer:\boxed{a_{113}=426.3}\to\fbox{B)}[/tex]
Answer Link

Otras preguntas

Solving systems by elimination: 2x + 4y = -4 3x + 5y = -3 Please show me your work so I can do the rest myself. Thanks!
If the speed of an object is tripled, its kinetic energy will be
Rewrite the function c(x) =9(x+3) using the distributive property
in what ways is climate controlled by the sun and the water cycle ?
What three islands are located off the East African coast
What two major processes are involved in the oxygen cycle?
If the speed of an object is tripled, its kinetic energy will be
What is a direct combination reaction?
How is the numeral 35.012 written in words and why
.is a pot holder a conductor or a insulator