katibug9379 katibug9379
  • 25-02-2018
  • Mathematics
contestada

What is the 30th term of the arithmetic series 4, 7, 10, …? 88 89?

Respuesta :

1kyokosakura1
1kyokosakura1 1kyokosakura1
  • 01-03-2018
a1 = 4; a2 = 7; a3 = 10
d = a2 - a1 -> d = 7 - 4 = 3
an = a1 + (n-1) d -> an = 4 + (n-1) * 3 = 4 + 3n - 3n + 1
[an = 3n + 1]
a30 = 3 * 30 + 1 = 90 + 1 = 91
Answer: a30 = 91
Answer Link

Otras preguntas

g What are the relative rates of diffusion of the three naturally occurring isotopes of krypton, 80Kr80Kr , 82Kr82Kr, and 83Kr83Kr. What are the relative rates
Calculate the volume of 150kg of chlorine gas at room temperature and pressure. The volume of one mole of gas at room temperature and pressure is 24.0dm^3. Rela
Could someone help explain how to do this please?
THE TOPIC IS: AREA OF CIRCLES!! PLEASE HELP ME WITH THIS QUESTION!!! WHATS THE ANSWER?? I WILL GIVE YOU BRAINLIEST AND A THANKS!!! THANK YOUUU!!! <33
the output produced by the speaker is called?
f) Identify cause and effect, how did irrigation systems help contribute to the developmentof the first four Civilizations?​
someone please help. this is the rest of my points. and it's worth 50% of my grade ​
What is the job of a partially formed protein help please will give brown
Explain about push and pull factors of migration.​
Can any one Answer this who ever give me the correct answer I will mark them brainliest ​