jeannettediaz jeannettediaz
  • 24-06-2019
  • Mathematics
contestada

Find S16 for 1 + 7 + 13 + 19 +

Respuesta :

konrad509
konrad509 konrad509
  • 24-06-2019

[tex]S_n=\dfrac{a_1+a_n}{2}\cdot n\\n=16\\a_1=1\\a_{16}=?\\\\a_n=a_1+(n-1)\cdot d\\d=6\\a_{16}=1+(16-1)\cdot6=1+90=91\\\\S_{16}=\dfrac{1+91}{2}\cdot6=46\cdot6=276[/tex]

Answer Link

Otras preguntas

Find the discriminant of the following equation. 4x2 + 16x + 16 = 0 ...?
In addition to its strong walls which of the following protected Constantinople from attacks?
what is the answer (10 subtract 2)2+(5+16 subtract 2)
Beginning at the philadelphia convention in 1787 there has been a struggle between those who want a
What are concurrent powers?
Is a virus a living thing?
as the elements in group 18 are considered in order of increasing atomic number, the ionization energy of each successive element 1) decreases 2) increases 3)
Should you generate electricity with our own personal wind turbine? That depends on whether you have enough wind on your site. To produce enough energy, your si
Which reaction is a single replacement reaction? 2H2 + O2 → 2H2O 2H2O2 → 2H2O + O2 KOH + HCl → KCl + H2O Cu + 2AgNO3 → 2Ag + Cu(NO3)2
what freedom did redode island offer that other colonies did not