zwhite7621 zwhite7621
  • 02-12-2019
  • Mathematics
contestada

Find the sum of the first 25 terms of the arithmetic sequence -2, 2, 6, 10, 14...

Respuesta :

nilo87
nilo87 nilo87
  • 03-12-2019

Answer:

1150

Step-by-step explanation:

a2=a1+d

d=4

sn=(n/2)(2a1+(n-1)d)

s25=(25/2)(2×(-2)+24×4)=25×46=

1150

Answer Link

Otras preguntas

SOMEONE PLEASE HELP ME ASAP PLEASE!!!​
Determine the maturity date and compute interest for each note. (Use 360 days a year. Do not round intermediate calculations.) Note Contract Date Principal Inte
******WHO ANSWERS WILL BE MARK AS BRAINLIEST******\ The length of the segment EF is 12 cm. What is the length of ED? * DE = 6 SqRt 3 cm DE = 3 SqRt 12 cm DE = 6
Write the expression 3*3*3*3*3 in exponential notation
the small units used in making synthetic fibre are _____​
Which statement is part of the currently accepted atomic model?
i need help someone pls
Find the slope of the line that passes through (66, 6) and (27, 96).
What is the measure of env (5x+57)degrees
In being served, a tennis ball is accelerated from rest to a speed of 42.1 m/s. The average power generated during the serve is 2920 W. Assuming that the accele