P0tential
P0tential
18-05-2018
Mathematics
contestada
Enter your answer in the box.
Respuesta :
mkryukova19
mkryukova19
18-05-2018
This is an arithmetic series,
so
S(n) = (n/2)*(a(1)+a(n))
S(25) = (25/2)*(a(1)+a(25))
n=25
a(n) = 3n-2
a(1)= 3*1-2=1
a(1)=1
a(25) = 3*25-2=75-2=73
a(25)=73
S(25)
= (25/2)*(1+73)=(25/2)*74=
925
S(25)=925
Answer : 925
Answer Link
VER TODAS LAS RESPUESTAS ( 56+ )
Otras preguntas
a circle passes through the points o(0,0), a(8,4) and b(6,6). show that oa is a diameter of the circle and find the equation of the circle
Calculate the local time at the following place when it is noon at Greenwich.(a):Tainan, longitude 120°East(b):Yukon, longitude 145° West(c): Rockhampton, longi
Empareja cada oración con la palabra o palabras indefinidas correctas. 1. A Ana le gusta rezar a [BLANK 1] hora. 2. [BLANK 2] familias son muy religiosas. 3. [
picking more than two fruits
helpppppppppppplppppppp
Csc(tan^1 square root 17 divided by 8) Please help fast!!!
Laura wants to cover a box with fabric. • The box is in the shape of a rectangular prism. • It measures 15 in. long, 11 in. wide, and 24 in. tall.
How to work out 20% of £54
The molar mass of two equally sized samples of unknown gaseous compounds is shown in the table. Molar Mass Comparison Gas Molar Mass X 28 g/mol Y 44 g/mol At ST
10 divied by 1 half of 3
